GCE AS and A Level. Chemistry. AS exams 2009 onwards A2 exams 2010 onwards. Unit 2: Specimen mark scheme. Version 1.1

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "GCE AS and A Level. Chemistry. AS exams 2009 onwards A2 exams 2010 onwards. Unit 2: Specimen mark scheme. Version 1.1"

Transcription

1 GCE AS and A Level Chemistry AS exams 2009 onwards A2 exams 2010 onwards Unit 2: Specimen mark scheme Version 1.1

2 Version 1.1: 07/07 abc General Certificate of Education Chemistry 2420 CHEM2 Chemistry In Action Mark Scheme Specimen Paper

3 Mark schemes are prepared by the Principal Examiner and considered, together with the relevant questions, by a panel of subject teachers. The specimen assessment materials are provided to give centres a reasonable idea of the general shape and character of the planned question papers and mark schemes in advance of the first operational exams. It must be stressed that a mark scheme is a working document, in many cases further developed and expanded on the basis of candidates reactions to a particular paper. Assumptions about future mark schemes on the basis of one year s document should be avoided; whilst the guiding principles of assessment remain constant, details will change, depending on the content of a particular examination paper. Copyright 2007 AQA and its licensors. All rights reserved. COPYRIGHT AQA retains the copyright on all its publications. However, registered centres for AQA are permitted to copy material from this booklet for their own internal use, with the following important exception: AQA cannot give permission to centres to photocopy any material that is acknowledged to a third party even for internal use within the centre. Set and published by the Assessment and Qualifications Alliance. The Assessment and Qualifications Alliance (AQA) is a company limited by guarantee registered in England and Wales (company number 64472) and a registered charity (registered charity number 1074). Registered address: AQA, Devas Street, Manchester M15 6EX Dr Michael Cresswell Director General

4 Question 1 The enthalpy change when 1 mol of a compound is completely burnt in oxygen under standard conditions, or 298K and 100kPA (i) C 2 H 6 + ½O 2 2CO 2 + H 2 O (ii) ΔH = 2 ΔH (CO 2 ) + ΔH (H 2 O) ΔH (C 2 H 6 ) = ( 85) = 1561 kj mol (c) moles methane = = kj evolved = = joules = (mc)δt ΔT = = 46.4 K Question 2 Peak lower and moved to right start at the origin and curve crosses once only (i) (Rate of reaction) increases (At a higher temperature) more molecules/particles have the minimum energy needed to react/have activation energy/have successful collisions Mark CE if incorrect effect given (ii) (Rate of reaction) increases lowers activation energy so that more molecules are able to react Mark CE if incorrect effect given

5 Question Low temperature Reaction is exothermic Low T reduces effect of heat evolved or heat evolved opposes the change in temperature High pressure mol gas 1 mol gas High p favours fewer moles by lowering p or forward reaction reduces volume and lowers p High T gives a low yield but Low T gives a low rate compromise increases reaction rate/catalyst surface contact Question 4 Gain of electrons (i) (+)5 or V or N 5+ (+)4 or IV or N 4+ (ii) (+)2 or II or N 2+ Reduction 4H + + NO + e ( ) NO + 2H 2 O (iii) 2H + + NO + e ( ) NO 2 + H 2 O (iv) Cu + 4H NO Cu H 2 O + 2NO 2 species balanced If electrons included, mark CE if these are not balanced 4

6 Question 5 (i) 2CuCO + C 2Cu + CO 2 (ii) Charcoal /carbon /C (i) Iron is more reactive / iron ore needs much more heat to extract the iron Carbon monoxide (c) stage 1: TiO 2 + 2C + Cl 2 TiCl 4 + 2CO (2) (C + Cl 2 in incorrect equation gains 1 mark) allow equations with + C CO 2 stage 2: TiCl 4 + 4Na (or 2Mg) 4NaCl (or 2MgCl 2 ) + Ti (2) (d) (Na or Mg in unbalanced equation gains 1 mark) Extraction: form metal oxide Or metal oxide implied reduce or react with suitable reducing agent Consequential on formation of metal oxide Pollution problems: SO 2 or oxides of S not SO alone (allow any sensible and correct reducing agent identified) any mention of acid rain or H 2 SO 4 or erosion caused by acid rain or correct problem due to acid rain 5

7 Question 6 Trend: increases Wrong trend CE=0 and in Reason: More electron shells OR implies more shell / subshells / levels Trend: decreases Explanation: Metallic bonds weaker OR weaker attraction between ions (or nuclei) & delocalised electrons Atoms (ions) larger This mark is only scored if previous mark given. CE if mention molecules, intermolecular forces ionic bonding (c) (d) Trend: increases Equation for magnesium: Mg + H 2 O MgO + H 2 Equation for strontium: Sr +2 H 2 O Sr(OH) 2 + H 2 Formula: BaSO 4 Use: Test for sulfate ion OR Pigment, for xrays, barium meal, paint 6

8 Question 7 (i) M4 arrow :Br H C H arrow M1 C H C H H Br arrow M2 H C + C H CH M carbocation (4) If wrong carbocation, lose structure mark If wrong alkene, lose structure mark Can still score ¾ i.e. penalise M Penalise M2 if polarity included incorrectly no bond between H and Br bond is shown as or (ii) CH CH CH credit secondary carbocation here if primary carbocation has been used in (i) : Ignore attack on this carbocation by Br (i) Structure: OH H C CH CH insist on C OH bond Name: propan2ol Not 2hydroxypropane (ii) Name of mechanism: nucleophilic substitution (both words) (NOT S N 1 or S N 2) Mechanism: M1 arrow Br H C CH CH CH CH(OH)CH + Br : (2) HO: arrow from (M2) lone pair penalise incorrect polarity on CBr (M1) Credit the arrows even if incorrect haloalkane If S N 1, both marks possible (c) (i) (ii) elimination base OR proton acceptor NOT nucleophile 7

9 Question 8 Mark Range The marking scheme for this part of the question includes an overall assessment for the Quality of Written Communication (QWC). There are no discrete marks for the assessment of QWC but the candidates QWC in this answer will be one of the criteria used to assign a level and award the marks for this part of the question Descriptor an answer will be expected to meet most of the criteria in the level descriptor claims supported by an appropriate range of evidence good use of information or ideas about chemistry, going beyond those given in the question argument well structured with minimal repetition or irrelevant points accurate and clear expression of ideas with only minor errors of grammar, punctuation and spelling claims partially supported by evidence good use of information or ideas about chemistry given in the question but limited beyond this the argument shows some attempt at structure the ideas are expressed with reasonable clarity but with a few errors of grammar, punctuation and spelling valid points but not clearly linked to an argument structure limited use of information or ideas about chemistry unstructured errors in spelling, punctuation and grammar or lack of fluency Kills bacteria / prevents bacterial diseases QWC Chlorine is a toxic substance Cl 2 +H 2 O HCl + HClO Cl 2 (aq) to Br (aq); yelloworange or yellowred or QWC yellowbrown solution 2Br + Cl 2 2Cl + Br 2 or molecular equation C1 2 (aq) to I (aq); brown/black solution formed or QWC black/brown/grey ppt/solid 2I + Cl 2 2Cl or molecular equation (c) Bromide: Brown/orange fumes 8

10 Bromine produced Sulphur dioxide produced Iodide: Purple fumes or black/brown/grey solid QWC or smell of bad eggs Iodine produced SO 2, S, H 2 S produced (one mark each) () Halfequations 2Br Br 2 + 2e OR 21 I 2 + 2e H 2 SO 4 +2e +2H + SO 2 + 4H 2 O OR H 2 SO 4 +6e +6H + S + 4H 2 O OR H 2 SO 4 +8e +8H + H 2 S + 4H 2 O Overall equation Any correct equation based on halfequations QWC Question 9 Allow 1 mark each for any correctly drawn primary, secondary and tertiary alcohol of molecular formula C 4 H 8 O Tertiary alcohol cannot be oxidised () Region cm 1 exact match to spectrum of known compound (c) A CH CH 2 CH 2 OH CH CH 2 O CH or CH CH(OH)CH B C one alkene e.g. CH 2= CH CH 2CH 2CH D one cycloalkane e.g. CH (6) CH CH = CH CH CH 2 (CH ) C = CHCH 2 H 2C = C(CH )CH 2CH etc 9 CH CH 2 CH CH

11 E CH CH 2 CHO CH COCH F 10

GCE AS and A Level. Chemistry. AS exams 2009 onwards A2 exams 2010 onwards. Unit 1: Specimen mark scheme. Version 1.1

GCE AS and A Level. Chemistry. AS exams 2009 onwards A2 exams 2010 onwards. Unit 1: Specimen mark scheme. Version 1.1 GCE AS and A Level Chemistry AS exams 2009 onwards A2 exams 2010 onwards Unit 1: Specimen mark scheme Version 1.1 Version 1.1 02/07 abc General Certificate of Education Chemistry 2420 CHEM1 Foundation

More information

Advanced Subsidiary Unit 1: The Core Principles of Chemistry

Advanced Subsidiary Unit 1: The Core Principles of Chemistry Write your name here Surname Other names Edexcel GCE Centre Number Chemistry Advanced Subsidiary Unit 1: The Core Principles of Chemistry Candidate Number Tuesday 15 May 2012 Afternoon Time: 1 hour 30

More information

CHM1 Atomic Structure, Bonding and Periodicity

CHM1 Atomic Structure, Bonding and Periodicity GCE 2005 January Series abc Mark Scheme Chemistry CM Atomic Structure, Bonding and Periodicity Mark schemes are prepared by the Principal Examiner and considered, together with the relevant questions,

More information

Version 1.0. General Certificate of Education June 2010. Foundation Chemistry. Mark Scheme

Version 1.0. General Certificate of Education June 2010. Foundation Chemistry. Mark Scheme Version.0 General Certificate of Education June 200 Chemistry oundation Chemistry CEM Mark Scheme Mark schemes are prepared by the Principal Examiner and considered, together with the relevant questions,

More information

abc Mark Scheme Additional Science 4463 / Chemistry 4421 General Certificate of Secondary Education Unit 2 Chemistry 2008 examination January series

abc Mark Scheme Additional Science 4463 / Chemistry 4421 General Certificate of Secondary Education Unit 2 Chemistry 2008 examination January series Version.0: 008 abc General Certificate of Secondary Education Additional Science 4463 / Chemistry 442 Unit 2 Chemistry Mark Scheme 2008 examination January series Mark schemes are prepared by the Principal

More information

Final. Mark Scheme. Chemistry CHEM5. (Specification 2420) Unit 5: Energetics, Redox and Inorganic Chemistry

Final. Mark Scheme. Chemistry CHEM5. (Specification 2420) Unit 5: Energetics, Redox and Inorganic Chemistry Version.2 General Certificate of Education (A-level) January 202 Chemistry CHEM5 (Specification 2420) Unit 5: Energetics, Redox and Inorganic Chemistry Final Mark Scheme Mark schemes are prepared by the

More information

Version 1.3. General Certificate of Education June 2011. Foundation Chemistry. Final. Mark Scheme

Version 1.3. General Certificate of Education June 2011. Foundation Chemistry. Final. Mark Scheme Version.3 General Certificate of Education June 20 Chemistry oundation Chemistry CEM inal Mark Scheme Mark schemes are prepared by the Principal Examiner and considered, together with the relevant questions,

More information

Report on the Examination

Report on the Examination Version 1.0 General Certificate of Education (A-level) June Chemistry CHEM5 (Specification 2420) Unit 5: Energetics, Redox and Inorganic Chemistry Report on the Examination Further copies of this Report

More information

GCSE Further Additional Science. Higher Tier. Unit 2 Chemistry 3H SPECIMEN MARK SCHEME V1

GCSE Further Additional Science. Higher Tier. Unit 2 Chemistry 3H SPECIMEN MARK SCHEME V1 GCSE Further Additional Science Higher Tier Unit 2 Chemistry 3H SPECIMEN MARK SCHEME V Copyright 202 AQA and its licensors. All rights reserved. The Assessment and Qualifications Alliance (AQA) is a company

More information

Instructions Answer all questions in the spaces provided. Do all rough work in this book. Cross through any work you do not want to be marked.

Instructions Answer all questions in the spaces provided. Do all rough work in this book. Cross through any work you do not want to be marked. GCSE CHEMISTRY Higher Tier Chemistry 1H H Specimen 2018 Time allowed: 1 hour 45 minutes Materials For this paper you must have: a ruler a calculator the periodic table (enclosed). Instructions Answer all

More information

CHM3 Introduction to Organic Chemistry

CHM3 Introduction to Organic Chemistry GCE 2005 January Series abc Mark Scheme Chemistry CHM3 Introduction to Organic Chemistry Mark schemes are prepared by the Principal Examiner and considered, together with the relevant questions, by a panel

More information

hij GCSE Additional Science Chemistry 2 Higher Tier Chemistry 2H SPECIMEN MARK SCHEME Version 1.0

hij GCSE Additional Science Chemistry 2 Higher Tier Chemistry 2H SPECIMEN MARK SCHEME Version 1.0 hij GCSE Additional Science Chemistry 2 Higher Tier Chemistry 2H SPECIMEN MARK SCHEME Version.0 Copyright 20 AQA and its licensors. All rights reserved. The Assessment and Qualifications Alliance (AQA)

More information

Final. Mark Scheme. Chemistry CHEM1. (Specification 2420) Unit 1: Foundation Chemistry. General Certificate of Education (A-level) June 2012

Final. Mark Scheme. Chemistry CHEM1. (Specification 2420) Unit 1: Foundation Chemistry. General Certificate of Education (A-level) June 2012 Version. General Certificate of Education (A-level) June 202 Chemistry CHEM (Specification 2420) Unit : Foundation Chemistry Final Mark Scheme Mark schemes are prepared by the Principal Examiner and considered,

More information

Friday 13 January 2012 Afternoon

Friday 13 January 2012 Afternoon Friday 13 January 2012 Afternoon AS GCE CHEMISTRY A F321 Atoms, Bonds and Groups *F314420112* Candidates answer on the Question Paper. OCR supplied materials: Data Sheet for Chemistry A (inserted) Other

More information

Advanced Subsidiary Unit 1: The Core Principles of Chemistry

Advanced Subsidiary Unit 1: The Core Principles of Chemistry Write your name here Surname Other names Edexcel GCE Centre Number Chemistry Advanced Subsidiary Unit 1: The Core Principles of Chemistry Candidate Number Thursday 13 January 2011 Morning Time: 1 hour

More information

CHEM1 Foundation Chemistry Mark scheme

CHEM1 Foundation Chemistry Mark scheme AQA Qualifications A-LEVEL Chemistry CEM Foundation Chemistry Mark scheme 2420 June 205 Version Final Mark Scheme Mark schemes are prepared by the Lead Assessment Writer and considered, together with the

More information

Final. Mark Scheme CHEM1. Chemistry. (Specification 2420) Unit 1: Foundation Chemistry. General Certificate of Education (A-level) January 2013

Final. Mark Scheme CHEM1. Chemistry. (Specification 2420) Unit 1: Foundation Chemistry. General Certificate of Education (A-level) January 2013 Version.4 General Certificate of Education (A-level) January 203 Chemistry CHEM (Specification 2420) Unit : Foundation Chemistry Final Mark Scheme Mark schemes are prepared by the Principal Examiner and

More information

CHM4 Further Physical and Organic Chemistry

CHM4 Further Physical and Organic Chemistry GE 005 January Series abc Mark Scheme hemistry M4 Further Physical and rganic hemistry Mark schemes are prepared by the Principal Examiner and considered, together with the relevant questions, by a panel

More information

Version 1. General Certificate of Education June 2011. Energetics, Redox and Inorganic Chemistry. Final. Mark Scheme

Version 1. General Certificate of Education June 2011. Energetics, Redox and Inorganic Chemistry. Final. Mark Scheme Version General Certificate of Education June 20 Chemistry CHEM5 Energetics, Redox and Inorganic Chemistry Final Mark Scheme Mark schemes are prepared by the Principal Examiner and considered, together

More information

Chenistry C2 question booklet part 1

Chenistry C2 question booklet part 1 Chenistry C2 question booklet part 94 minutes 94 marks Page of 34 Q. The diagram represents a carbon atom. (a) Use words from the box to answer the questions. electron neutron nucleus proton (i) What is

More information

Version : abc. General Certificate of Education. Chemistry Foundation Chemistry. Mark Scheme examination - January series

Version : abc. General Certificate of Education. Chemistry Foundation Chemistry. Mark Scheme examination - January series Version :.0 0209 abc General Certificate of Education Chemistry 42 CHEM Foundation Chemistry Mark Scheme 2009 examination - January series Mark schemes are prepared by the Principal Examiner and considered,

More information

THIS IS A NEW SPECIFICATION

THIS IS A NEW SPECIFICATION THIS IS A NEW SPECIFICATION ADVANCED SUBSIDIARY GCE CHEMISTRY A Atoms, Bonds and Groups F321 *CUP/T73723* Candidates answer on the question paper OCR Supplied Materials: Data Sheet for Chemistry A (Inserted)

More information

Chemistry Assessment Unit AS 1

Chemistry Assessment Unit AS 1 New Specification Centre Number 71 Candidate Number ADVANCED SUBSIDIARY (AS) General Certificate of Education January 2010 Chemistry Assessment Unit AS 1 assessing Basic Concepts in Physical and Inorganic

More information

CHEM1 Foundation Chemistry Mark scheme

CHEM1 Foundation Chemistry Mark scheme AQA Qualifications A-LEVEL CHEMISTRY CHEM Foundation Chemistry Mark scheme 2420 June 204 Version.2 Final Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant

More information

Chemistry *P44269A0120* P44269A. Unit: KCH0/4CH0 Paper: 2C. Tuesday 9 June 2015 Afternoon Time: 1 hour. Instructions. Information.

Chemistry *P44269A0120* P44269A. Unit: KCH0/4CH0 Paper: 2C. Tuesday 9 June 2015 Afternoon Time: 1 hour. Instructions. Information. Write your name here Surname Other names Pearson Edexcel Certificate Pearson Edexcel International GCSE Chemistry Unit: KCH0/4CH0 Paper: 2C Centre Number Candidate Number Tuesday 9 June 2015 Afternoon

More information

Friday 23 May 2014 Morning

Friday 23 May 2014 Morning Friday 23 May 2014 Morning AS GCE CHEMISTRY A F321/01 Atoms, Bonds and Groups *1168266380* Candidates answer on the Question Paper OCR supplied materials: Data Sheet for Chemistry A (inserted) Other materials

More information

Candidate Style Answer

Candidate Style Answer Candidate Style Answer Chemistry A Unit F321 Atoms, Bonds and Groups High banded response This Support Material booklet is designed to accompany the OCR GCE Chemistry A Specimen Paper F321 for teaching

More information

Final. Mark Scheme. Chemistry CHEM5. (Specification 2420) Unit 5: Energetics, Redox and Inorganic Chemistry

Final. Mark Scheme. Chemistry CHEM5. (Specification 2420) Unit 5: Energetics, Redox and Inorganic Chemistry Version.4 General Certificate of Education (A-level) January 203 Chemistry CHEM5 (Specification 2420) Unit 5: Energetics, Redox and Inorganic Chemistry Final Mark Scheme Mark schemes are prepared by the

More information

1. Balance the following equation. What is the sum of the coefficients of the reactants and products?

1. Balance the following equation. What is the sum of the coefficients of the reactants and products? 1. Balance the following equation. What is the sum of the coefficients of the reactants and products? 1 Fe 2 O 3 (s) + _3 C(s) 2 Fe(s) + _3 CO(g) a) 5 b) 6 c) 7 d) 8 e) 9 2. Which of the following equations

More information

CHEM5 Energetics, Redox and Inorganic Chemistry Mark scheme

CHEM5 Energetics, Redox and Inorganic Chemistry Mark scheme AQA Qualifications A-LEVEL CHEMISTRY CHEM5 Energetics, Redox and Inorganic Chemistry Mark scheme 2420 June 204 Version. Final Mark schemes are prepared by the Lead Assessment Writer and considered, together

More information

IB Chemistry. DP Chemistry Review

IB Chemistry. DP Chemistry Review DP Chemistry Review Topic 1: Quantitative chemistry 1.1 The mole concept and Avogadro s constant Assessment statement Apply the mole concept to substances. Determine the number of particles and the amount

More information

Cambridge International Examinations Cambridge International Advanced Subsidiary and Advanced Level

Cambridge International Examinations Cambridge International Advanced Subsidiary and Advanced Level Cambridge International Examinations Cambridge International Advanced Subsidiary and Advanced Level *0123456789* CHEMISTRY 9701/02 Paper 2 AS Level Structured Questions For Examination from 2016 SPECIMEN

More information

Paper 1 (7405/1): Inorganic and Physical Chemistry Mark scheme

Paper 1 (7405/1): Inorganic and Physical Chemistry Mark scheme AQA Qualifications A-level Chemistry Paper (7405/): Inorganic and Physical Chemistry Mark scheme 7405 Specimen paper Version 0.5 MARK SCHEME A-level Chemistry Specimen paper 0. This question is marked

More information

Tuesday 15 May 2012 Afternoon

Tuesday 15 May 2012 Afternoon Tuesday 15 May 2012 Afternoon AS GCE CHEMISTRY A F321 Atoms, Bonds and Groups *F314600612* Candidates answer on the Question Paper. OCR supplied materials: Data Sheet for Chemistry A (inserted) Other materials

More information

The formation of a gas is evidence of. 1. A chemical change. 2. A physical change. 3. No change in energy 4. Both (1) and (2)

The formation of a gas is evidence of. 1. A chemical change. 2. A physical change. 3. No change in energy 4. Both (1) and (2) Chapter 8 Review The formation of a gas is evidence of 1. A chemical change. 2. A physical change. 3. No change in energy 4. Both (1) and (2) The formation of a gas is evidence of 1. A chemical change.

More information

Metals Topic Test. Part 1: Multiple Choice Choose the best alternative and indicate your response on the answer sheet

Metals Topic Test. Part 1: Multiple Choice Choose the best alternative and indicate your response on the answer sheet Metals Topic Test Part 1: Multiple Choice Choose the best alternative and indicate your response on the answer sheet 1. The chemical equation for the reaction between aluminium and oxygen is: 4Al (s) +

More information

Tuesday 3 June 2014 Afternoon

Tuesday 3 June 2014 Afternoon Tuesday 3 June 2014 Afternoon AS GCE CHEMISTRY B (SALTERS) F332/01/TEST Chemistry of Natural Resources *3176628830* Candidates answer on the Question Paper. OCR supplied materials: Data Sheet for Chemistry

More information

Additional Science 4408 / Chemistry 4402

Additional Science 4408 / Chemistry 4402 Version: 0/08/202 General Certificate of Secondary Education Additional Science 4408 / Chemistry 4402 Unit Chemistry 2 Mark Scheme 202 examination June series Mark schemes are prepared by the Principal

More information

Questions Q1. Most atoms contain electrons, protons and neutrons. (a) Describe the positions of these particles in atoms. (3)

Questions Q1. Most atoms contain electrons, protons and neutrons. (a) Describe the positions of these particles in atoms. (3) Questions Q1. Most atoms contain electrons, protons and neutrons. (a) Describe the positions of these particles in atoms. (b) A chlorine atom contains 17 electrons. What is the electronic configuration

More information

In the box below, draw the Lewis electron-dot structure for the compound formed from magnesium and oxygen. [Include any charges or partial charges.

In the box below, draw the Lewis electron-dot structure for the compound formed from magnesium and oxygen. [Include any charges or partial charges. Name: 1) Which molecule is nonpolar and has a symmetrical shape? A) NH3 B) H2O C) HCl D) CH4 7222-1 - Page 1 2) When ammonium chloride crystals are dissolved in water, the temperature of the water decreases.

More information

GCE. Chemistry A. Mark Scheme for June 2012. Advanced Subsidiary GCE Unit F321: Atoms, Bonds and Groups. Oxford Cambridge and RSA Examinations

GCE. Chemistry A. Mark Scheme for June 2012. Advanced Subsidiary GCE Unit F321: Atoms, Bonds and Groups. Oxford Cambridge and RSA Examinations GCE Chemistry A Advanced Subsidiary GCE Unit F321: Atoms, Bonds and Groups Mark Scheme for June 2012 Oxford Cambridge and RSA Examinations OCR (Oxford Cambridge and RSA) is a leading UK awarding body,

More information

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Chemical Calculations: Formula Masses, Moles, and Chemical Equations Chemical Calculations: Formula Masses, Moles, and Chemical Equations Atomic Mass & Formula Mass Recall from Chapter Three that the average mass of an atom of a given element can be found on the periodic

More information

Learn Chemistry. Starter for Ten 3. Bonding. Registered Charity Number

Learn Chemistry. Starter for Ten 3. Bonding.  Registered Charity Number Learn Chemistry Starter for Ten 3. Bonding Developed by Dr Kristy Turner, RSC School Teacher Fellow 2011-2012 at the University of Manchester, and Dr Catherine Smith, RSC School Teacher Fellow 2011-2012

More information

Getting the most from this book...4 About this book...5

Getting the most from this book...4 About this book...5 Contents Getting the most from this book...4 About this book....5 Content Guidance Topic 1 Atomic structure and the periodic table...8 Topic 2 Bonding and structure...14 Topic 2A Bonding....14 Topic 2B

More information

Version : 07/03/2012. General Certificate of Secondary Education. Chemistry CHY3H Unit Chemistry 3. Mark Scheme examination January series

Version : 07/03/2012. General Certificate of Secondary Education. Chemistry CHY3H Unit Chemistry 3. Mark Scheme examination January series Version : 07/03/202 General Certificate of Secondary Education Chemistry 442 CHY3H Unit Chemistry 3 Mark Scheme 202 examination January series Mark schemes are prepared by the Principal Examiner and considered,

More information

Potassium + Chlorine. K(s) + Cl 2 (g) 2 KCl(s)

Potassium + Chlorine. K(s) + Cl 2 (g) 2 KCl(s) Types of Reactions Consider for a moment the number of possible chemical reactions. Because there are millions of chemical compounds, it is logical to expect that there are millions of possible chemical

More information

Exampro GCSE Chemistry

Exampro GCSE Chemistry Exampro GCSE Chemistry C Chapter higher Name: Class: Author: Date: Time: 56 Marks: 56 Comments: Page of 8 Q. The hip joint sometimes has to be replaced. Early replacement hip joints were made from stainless

More information

GCE Chemistry A. Mark Scheme for June 2014. Unit F321: Atoms, Bonds and Groups. Advanced Subsidiary GCE. Oxford Cambridge and RSA Examinations

GCE Chemistry A. Mark Scheme for June 2014. Unit F321: Atoms, Bonds and Groups. Advanced Subsidiary GCE. Oxford Cambridge and RSA Examinations GCE Chemistry A Unit F321: Atoms, Bonds and Groups Advanced Subsidiary GCE Mark Scheme for June 2014 Oxford Cambridge and RSA Examinations OCR (Oxford Cambridge and RSA) is a leading UK awarding body,

More information

The content assessed by the examination papers and the type of questions is unchanged.

The content assessed by the examination papers and the type of questions is unchanged. Location Entry Codes As part of CIE s continual commitment to maintaining best practice in assessment, CIE uses different variants of some question papers for our most popular assessments with large and

More information

12.1 How do sub-atomic particles help us to understand the structure of substances?

12.1 How do sub-atomic particles help us to understand the structure of substances? 12.1 How do sub-atomic particles help us to understand the structure of substances? Simple particle theory is developed in this unit to include atomic structure and bonding. The arrangement of electrons

More information

LATTICE ENTHALPY. There can be two definitions - one is the opposite of the other! Make sure you know which one is being used.

LATTICE ENTHALPY. There can be two definitions - one is the opposite of the other! Make sure you know which one is being used. Lattice Enthalpy F325 1 LATTICE WARNING There can be two definitions - one is the opposite of the other! Make sure you know which one is being used. Lattice Dissociation Enthalpy The enthalpy change when

More information

GCE. Chemistry A. Mark Schemes for the Units. January 2009 H034/H434/MS/R/09J. Advanced GCE A2 H434 Advanced Subsidiary GCE AS H034

GCE. Chemistry A. Mark Schemes for the Units. January 2009 H034/H434/MS/R/09J. Advanced GCE A2 H434 Advanced Subsidiary GCE AS H034 GCE Chemistry A Advanced GCE A2 H434 Advanced Subsidiary GCE AS H034 Mark Schemes for the Units January 2009 H034/H434/MS/R/09J Oxford Cambridge and RSA Examinations OCR (Oxford Cambridge and RSA) is a

More information

Goals. 1. How are chemical reactions written?

Goals. 1. How are chemical reactions written? Goals 1. How are chemical reactions written? Given the identities of reactants and products, be able to write a balanced chemical equation or net ionic equation. 2. How are chemical reactions of ionic

More information

GRADE 11 PHYSICAL SCIENCES SESSION 3: CHEMICAL BONDING. Key Concepts. X-planation

GRADE 11 PHYSICAL SCIENCES SESSION 3: CHEMICAL BONDING. Key Concepts. X-planation GRADE 11 PHYSICAL SCIENCES SESSION 3: CHEMICAL BONDING Key Concepts In this session we will focus on summarising what you need to know about: Bonding Covalent bonding Electronegativity in covalent bonding

More information

GCE. Chemistry A. Mark Scheme for January 2013. Advanced Subsidiary GCE Unit F321: Atoms, Bonds and Groups. Oxford Cambridge and RSA Examinations

GCE. Chemistry A. Mark Scheme for January 2013. Advanced Subsidiary GCE Unit F321: Atoms, Bonds and Groups. Oxford Cambridge and RSA Examinations GCE Chemistry A Advanced Subsidiary GCE Unit F321: Atoms, Bonds and Groups Mark Scheme for January 2013 Oxford Cambridge and RSA Examinations OCR (Oxford Cambridge and RSA) is a leading UK awarding body,

More information

hij GCSE Additional Science Chemistry 2 Foundation Tier Chemistry 2F SPECIMEN MARK SCHEME Version 1.0

hij GCSE Additional Science Chemistry 2 Foundation Tier Chemistry 2F SPECIMEN MARK SCHEME Version 1.0 hij GCSE Additional Science Chemistry 2 Foundation Tier Chemistry 2F SPECIMEN MARK SCHEME Version.0 Copyright 20 AQA and its licensors. All rights reserved. The Assessment and Qualifications Alliance (AQA)

More information

SPECIMEN. Candidate Number

SPECIMEN. Candidate Number Advanced Subsidiary GCE CHEMISTRY A F321 QP Unit F321: Atoms, Bonds and Groups Specimen Paper Candidates answer on the question paper. Additional Materials: Data Sheet for Chemistry (Inserted) Scientific

More information

Test 8: Review Questions

Test 8: Review Questions Name: Thursday, February 14, 2008 Test 8: Review Questions 1. Based on bond type, which compound has the highest melting point? 1. CH OH 3. CaCl 3 2 2. C H 4. CCl 6 14 4 2. Which compound contains ionic

More information

Cambridge International Examinations Cambridge International General Certificate of Secondary Education

Cambridge International Examinations Cambridge International General Certificate of Secondary Education Cambridge International Examinations Cambridge International General Certificate of Secondary Education *0123456789* CHEMISTRY 0620/03 Paper 3 Theory (Core) For Examination from 2016 SPECIMEN PAPER 1 hour

More information

hij GCSE Science / Chemistry Higher Tier Unit 1 Chemistry SPECIMEN MARK SCHEME Version 1.0

hij GCSE Science / Chemistry Higher Tier Unit 1 Chemistry SPECIMEN MARK SCHEME Version 1.0 hij GCSE Science / Chemistry Higher Tier Unit Chemistry SPECIMEN MARK SCHEME Version.0 Copyright 20 AQA and its licensors. All rights reserved. The Assessment and Qualifications Alliance (AQA) is a company

More information

Chemistry Assessment Unit AS 1

Chemistry Assessment Unit AS 1 Centre Number 71 Candidate Number ADVANCED SUBSIDIARY (AS) General Certificate of Education January 2011 Chemistry Assessment Unit AS 1 assessing Basic Concepts in Physical and Inorganic Chemistry [AC111]

More information

Ms. Campbell Ionic Bonding Practice Regents Chemistry

Ms. Campbell Ionic Bonding Practice Regents Chemistry Name Student # Ms. Campbell Ionic Bonding Practice Regents Chemistry 1. Which element reacts with oxygen to form ionic bonds? 1) calcium 2) hydrogen 3) chlorine 4) nitrogen 2. Element X reacts with chlorine

More information

Q1. Hydrogen chloride (HCl) can be made by the reaction of hydrogen (H 2) with chlorine (Cl 2).

Q1. Hydrogen chloride (HCl) can be made by the reaction of hydrogen (H 2) with chlorine (Cl 2). Q. Hydrogen chloride (HCl) can be made by the reaction of hydrogen (H 2) with chlorine (Cl 2). (a) The diagrams represent molecules of hydrogen and chlorine. Draw a similar diagram to represent a molecule

More information

Which substance contains positive ions immersed in a sea of mobile electrons? A) O2(s) B) Cu(s) C) CuO(s) D) SiO2(s)

Which substance contains positive ions immersed in a sea of mobile electrons? A) O2(s) B) Cu(s) C) CuO(s) D) SiO2(s) BONDING MIDTERM REVIEW 7546-1 - Page 1 1) Which substance contains positive ions immersed in a sea of mobile electrons? A) O2(s) B) Cu(s) C) CuO(s) D) SiO2(s) 2) The bond between hydrogen and oxygen in

More information

SUGGESTION ANSWER SCHEME CHAPTER 8: THERMOCHEMISTRY. 1 (a) Use the data in the table below to answer the following questions:

SUGGESTION ANSWER SCHEME CHAPTER 8: THERMOCHEMISTRY. 1 (a) Use the data in the table below to answer the following questions: SUGGESTION ANSWER SCHEME CHAPTER 8: THERMOCHEMISTRY ANSWER SCHEME UPS 2004/2005 SK027 1 (a) Use the data in the table below to answer the following questions: Enthalpy change ΔH (kj/mol) Atomization energy

More information

INTI COLLEGE MALAYSIA A? LEVEL PROGRAMME CHM 111: CHEMISTRY MOCK EXAMINATION: DECEMBER 2000 SESSION. 37 74 20 40 60 80 m/e

INTI COLLEGE MALAYSIA A? LEVEL PROGRAMME CHM 111: CHEMISTRY MOCK EXAMINATION: DECEMBER 2000 SESSION. 37 74 20 40 60 80 m/e CHM111(M)/Page 1 of 5 INTI COLLEGE MALAYSIA A? LEVEL PROGRAMME CHM 111: CHEMISTRY MOCK EXAMINATION: DECEMBER 2000 SESSION SECTION A Answer ALL EIGHT questions. (52 marks) 1. The following is the mass spectrum

More information

Chemical Reactions. Chemical Reaction. Chemical Reaction (continued) Reactants yield Products Or Reactants Products. Chemical Reactions 2014.

Chemical Reactions. Chemical Reaction. Chemical Reaction (continued) Reactants yield Products Or Reactants Products. Chemical Reactions 2014. Chemical Reactions D. Knauss RRHS Chemical Reaction When one or more substances change into one or more new substances with different chemical and physical properties. Chemical Reaction (continued) Reactants

More information

Ch 8 Notes: Chemical Equations and Reactions

Ch 8 Notes: Chemical Equations and Reactions Name: Ch 8 Notes: Chemical Equations and Reactions I. Chemical Equations A properly written chemical equation can summarize any chemical change. The following requirements will help you write and read

More information

THIS IS A NEW SPECIFICATION

THIS IS A NEW SPECIFICATION THIS IS A NEW SPECIFICATION ADVANCED SUBSIDIARY GCE CHEMISTRY A Atoms, Bonds and Groups F321 * OCE / 228 4 5 * Candidates answer on the Question Paper OCR Supplied Materials: Data Sheet for Chemistry A

More information

Unit 6 The Mole Concept

Unit 6 The Mole Concept Chemistry Form 3 Page 62 Ms. R. Buttigieg Unit 6 The Mole Concept See Chemistry for You Chapter 28 pg. 352-363 See GCSE Chemistry Chapter 5 pg. 70-79 6.1 Relative atomic mass. The relative atomic mass

More information

Paper 1 (7404/1): Inorganic and Physical Chemistry Mark scheme

Paper 1 (7404/1): Inorganic and Physical Chemistry Mark scheme AQA Qualifications AS Chemistry Paper (7404/): Inorganic and Physical Chemistry Mark scheme 7404 Specimen paper Version 0.6 MARK SCHEME AS Chemistry Specimen paper Section A 0. s 2 2s 2 2p 6 3s 2 3p 6

More information

Final Exam Review. I normalize your final exam score out of 70 to a score out of 150. This score out of 150 is included in your final course total.

Final Exam Review. I normalize your final exam score out of 70 to a score out of 150. This score out of 150 is included in your final course total. Final Exam Review Information Your ACS standardized final exam is a comprehensive, 70 question multiple choice (a d) test featuring material from BOTH the CHM 101 and 102 syllabi. Questions are graded

More information

F321. CHEMISTRY A Atoms, Bonds and Groups ADVANCED SUBSIDIARY GCE. Monday 23 May 2011 Afternoon. Duration: 1 hour

F321. CHEMISTRY A Atoms, Bonds and Groups ADVANCED SUBSIDIARY GCE. Monday 23 May 2011 Afternoon. Duration: 1 hour ADVANCED SUBSIDIARY GCE CHEMISTRY A Atoms, Bonds and Groups F321 *F318510611* Candidates answer on the question paper. OCR supplied materials: Data Sheet for Chemistry A (inserted) Other materials required:

More information

Practice Chemistry Induction day test questions 2016

Practice Chemistry Induction day test questions 2016 Practice Chemistry Induction day test questions 206 Q.Magnesium oxide nanoparticles can kill bacteria. The figure below shows the percentage of bacteria killed by different sized nanoparticles. Size of

More information

Chemistry Final Exam Review

Chemistry Final Exam Review Name: Date: Block: Chemistry Final Exam Review 2012-2013 Unit 1: Measurement, Numbers, Scientific Notation, Conversions, Dimensional Analysis 1. Write 0.000008732 in scientific notation 8.732x10-6 2. Write

More information

hij GCSE Science A 1 Foundation Tier Unit 5F SPECIMEN MARK SCHEME Version 1.0

hij GCSE Science A 1 Foundation Tier Unit 5F SPECIMEN MARK SCHEME Version 1.0 hij GCSE Science A Foundation Tier Unit 5F SPECIMEN MARK SCHEME Version.0 Copyright 20 AQA and its licensors. All rights reserved. The Assessment and Qualifications Alliance (AQA) is a company limited

More information

Version 1.0: 0807. abc. General Certificate of Education. Physics 6451. Specification A. Mark Scheme. 2007 examination - June series

Version 1.0: 0807. abc. General Certificate of Education. Physics 6451. Specification A. Mark Scheme. 2007 examination - June series Version 1.0: 0807 abc General Certificate of Education Physics 6451 Specification A PHA5/W Astrophysics Mark Scheme 007 examination - June series Mark schemes are prepared by the Principal Examiner and

More information

CP Chemistry Review for Stoichiometry Test

CP Chemistry Review for Stoichiometry Test CP Chemistry Review for Stoichiometry Test Stoichiometry Problems (one given reactant): 1. Make sure you have a balanced chemical equation 2. Convert to moles of the known substance. (Use the periodic

More information

klm Science B 4462 / Chemistry 4421 CHY1F Unit Chemistry 1 Mark Scheme General Certificate of Secondary Education 2011 examination January series

klm Science B 4462 / Chemistry 4421 CHY1F Unit Chemistry 1 Mark Scheme General Certificate of Secondary Education 2011 examination January series Version : 08/03/20 klm General Certificate of Secondary Education Science B 4462 / Chemistry 442 CHYF Unit Chemistry Mark Scheme 20 examination January series Mark schemes are prepared by the Principal

More information

hij Teacher Resource Bank GCE Chemistry PSA10: A2 Inorganic Chemistry Carry out a redox titration

hij Teacher Resource Bank GCE Chemistry PSA10: A2 Inorganic Chemistry Carry out a redox titration hij Teacher Resource Bank GCE Chemistry : A2 Inorganic Chemistry Copyright 2009 AQA and its licensors. All rights reserved. The Assessment and Qualifications Alliance (AQA) is a company limited by guarantee

More information

Chemistry/Additional Science Unit C2: Discovering Chemistry

Chemistry/Additional Science Unit C2: Discovering Chemistry Write your name here Surname Other names Edexcel GCSE Centre Candidate Chemistry/Additional Science Unit C2: Discovering Chemistry Foundation Tier Additional Sample Assessment Material Time: 1 hour You

More information

Chemistry CHEM1. Unit 1 Foundation Chemistry. Surname. Other Names. Centre Number. Candidate Number. Candidate Signature

Chemistry CHEM1. Unit 1 Foundation Chemistry. Surname. Other Names. Centre Number. Candidate Number. Candidate Signature Surname Other Names Centre Number Candidate Number Candidate Signature General Certificate of Education Advanced Subsidiary Examination January 2013 Chemistry Unit 1 Foundation Chemistry CEM1 Thursday

More information

Topic 3 National Chemistry Summary Notes. Bonding, Structure and Properties of Substances. Covalent Bonds

Topic 3 National Chemistry Summary Notes. Bonding, Structure and Properties of Substances. Covalent Bonds Topic 3 National Chemistry Summary Notes Bonding, Structure and Properties of Substances LI 1 Covalent Bonds Most atoms do not exist as single atoms. They are mainly found combined with other atoms in

More information

Chapter 11. Chemical Bonds: The Formation of Compounds from Atoms

Chapter 11. Chemical Bonds: The Formation of Compounds from Atoms Chapter 11 Chemical Bonds: The Formation of Compounds from Atoms 1 11.1 Periodic Trends in atomic properties 11.1 Periodic Trends in atomic properties design of periodic table is based on observing properties

More information

Name Class Date. Chapter: Chemical Equations and Reactions

Name Class Date. Chapter: Chemical Equations and Reactions Assessment Chapter Test A Chapter: Chemical Equations and Reactions In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. 1. You

More information

Chapter 3. Stoichiometry: Ratios of Combination. Insert picture from First page of chapter. Copyright McGraw-Hill 2009 1

Chapter 3. Stoichiometry: Ratios of Combination. Insert picture from First page of chapter. Copyright McGraw-Hill 2009 1 Chapter 3 Insert picture from First page of chapter Stoichiometry: Ratios of Combination Copyright McGraw-Hill 2009 1 3.1 Molecular and Formula Masses Molecular mass - (molecular weight) The mass in amu

More information

Chemical Reactions, Counting Atoms, and Balancing Chemical Equations.

Chemical Reactions, Counting Atoms, and Balancing Chemical Equations. Chemical Reactions, Counting Atoms, and Balancing Chemical Equations. A Chemical Reaction is A process where one or more elements or compounds are changed into one or more different substances A process

More information

MV18. Double Award Science: Chemistry Unit C1 Higher Tier. TIME 1 hour, plus your additional time allowance.

MV18. Double Award Science: Chemistry Unit C1 Higher Tier. TIME 1 hour, plus your additional time allowance. General Certificate of Secondary Education 2013 2014 Double Award Science: Chemistry Unit C1 Higher Tier [GSD22] MV18 THURSDAY 14 NOVEMBER 2013, MORNING TIME 1 hour, plus your additional time allowance.

More information

Amount of Substance. http://www.avogadro.co.uk/definitions/elemcompmix.htm

Amount of Substance. http://www.avogadro.co.uk/definitions/elemcompmix.htm Page 1 of 14 Amount of Substance Key terms in this chapter are: Element Compound Mixture Atom Molecule Ion Relative Atomic Mass Avogadro constant Mole Isotope Relative Isotopic Mass Relative Molecular

More information

Cambridge International Examinations Cambridge International General Certificate of Secondary Education

Cambridge International Examinations Cambridge International General Certificate of Secondary Education Cambridge International Examinations Cambridge International General Certificate of Secondary Education *0123456789* CHEMISTRY 0620/04 Paper 4 Theory (Extended) For Examination from 2016 SPECIMEN PAPER

More information

Chemistry AS90171 Describe chemical reactions

Chemistry AS90171 Describe chemical reactions Chemistry AS90171 Describe chemical reactions This achievement standard involves the description of chemical reactions, including the carrying out of calculations. Achievement Merit Excellence Describe

More information

Formulae, Equations & Formula Mass

Formulae, Equations & Formula Mass St Peter the Apostle High School Chemistry Department Formulae, Equations & Formula Mass N4 & N5 Homework Questions Answer questions as directed by your teacher. National 4 level questions are first followed

More information

Q1. The chart shows the processes involved in the manufacture of nitric acid from ammonia.

Q1. The chart shows the processes involved in the manufacture of nitric acid from ammonia. Chemistry C2 Foundation and Higher Questions Q1. The chart shows the processes involved in the manufacture of nitric acid from ammonia. (a) Complete the word equation for the reaction that takes place

More information

SCH3UI-02 Final Examination Review (Fall 2014)

SCH3UI-02 Final Examination Review (Fall 2014) SCH3UI-02 Final Examination Review (Fall 2014) 1. Chlorine has an atomic number of 17. Create a Bohr Rutherford diagram of a Cl-35 atom. To achieve a stable arrangement, is this atom most likely to gain

More information

CHEMISTRY II FINAL EXAM REVIEW

CHEMISTRY II FINAL EXAM REVIEW Name Period CHEMISTRY II FINAL EXAM REVIEW Final Exam: approximately 75 multiple choice questions Ch 12: Stoichiometry Ch 5 & 6: Electron Configurations & Periodic Properties Ch 7 & 8: Bonding Ch 14: Gas

More information

Double Award Science: Chemistry Unit C1 Higher Tier

Double Award Science: Chemistry Unit C1 Higher Tier New Specification Centre Number 71 Candidate Number General Certificate of Secondary Education 2011 2012 Double Award Science: Chemistry Unit C1 Higher Tier GSD22 [GSD22] MONDAY 21 MAY 2012, MORNING TIME

More information

www.chemsheets.co.uk 17-Jul-12 Chemsheets A2 033 1

www.chemsheets.co.uk 17-Jul-12 Chemsheets A2 033 1 www.chemsheets.co.uk 17-Jul-12 Chemsheets A2 033 1 AS THERMODYNAMICS REVISION What is enthalpy? It is a measure of the heat content of a substance Enthalpy change ( H) = Change in heat content at constant

More information

IB Chemistry 1 Mole. One atom of C-12 has a mass of 12 amu. One mole of C-12 has a mass of 12 g. Grams we can use more easily.

IB Chemistry 1 Mole. One atom of C-12 has a mass of 12 amu. One mole of C-12 has a mass of 12 g. Grams we can use more easily. The Mole Atomic mass units and atoms are not convenient units to work with. The concept of the mole was invented. This was the number of atoms of carbon-12 that were needed to make 12 g of carbon. 1 mole

More information

CHEM 101 WINTER EXAM III

CHEM 101 WINTER EXAM III CHEM 101 WINTER 08-09 EXAM III On the answer sheet (Scantron) write you name, student ID number, and recitation section number. Choose the best (most correct) answer for each question and enter it on your

More information

hij Teacher Resource Bank GCE Chemistry PSA4: AS Physical Chemistry Measure an Enthalpy Change

hij Teacher Resource Bank GCE Chemistry PSA4: AS Physical Chemistry Measure an Enthalpy Change hij Teacher Resource Bank GCE Chemistry : AS Physical Chemistry Measure an Enthalpy Change The Assessment and Qualifications Alliance (AQA) is a company limited by guarantee registered in England and Wales

More information