Attenuation of metals in tailings. Department of Chemistry, Umeå University

Periodic Table, Valency and Formula

Periodic Table, Valency and Formula Origins of the Periodic Table Mendelѐѐv in 1869 proposed that a relationship existed between the chemical properties of elements and their atomic masses. He noticed

Chemistry Post-Enrolment Worksheet

Name: Chemistry Post-Enrolment Worksheet The purpose of this worksheet is to get you to recap some of the fundamental concepts that you studied at GCSE and introduce some of the concepts that will be part

Balancing Chemical Equations Worksheet

Balancing Chemical Equations Worksheet Student Instructions 1. Identify the reactants and products and write a word equation. 2. Write the correct chemical formula for each of the reactants and the products.

Chapter 16: Tests for ions and gases

The position of hydrogen in the reactivity series Hydrogen, although not a metal, is included in the reactivity series because it, like metals, can be displaced from aqueous solution, only this time the

GCSE Chemistry. Making Salts Instructions and answers for teachers

GCSE Chemistry Making Salts Instructions and answers for teachers The Activity: Learning Outcomes: To be able to recall the names and chemical formulae for commonly used acids To understand how salts can

APPENDIX B: EXERCISES

BUILDING CHEMISTRY LABORATORY SESSIONS APPENDIX B: EXERCISES Molecular mass, the mole, and mass percent Relative atomic and molecular mass Relative atomic mass (A r ) is a constant that expresses the ratio

GCSE Chemistry Quiz Chemical Reactions

GCSE Chemistry Quiz Chemical Reactions A chemical reaction is a process where the molecular structure changes. Chemical reactions are all around us. We can see many reactions such as fireworks and explosions.

WRITING CHEMICAL FORMULA

WRITING CHEMICAL FORMULA For ionic compounds, the chemical formula must be worked out. You will no longer have the list of ions in the exam (like at GCSE). Instead you must learn some and work out others.

80. Testing salts for anions and cations

Classic chemistry experiments 203 80. Testing salts for anions and cations Topic Qualitative analysis. Timing Description 12 hours. Students attempt to identify the anions and cations present in a salt

2. DECOMPOSITION REACTION ( A couple have a heated argument and break up )

TYPES OF CHEMICAL REACTIONS Most reactions can be classified into one of five categories by examining the types of reactants and products involved in the reaction. Knowing the types of reactions can help

Research on the Prediction of Mine Drainage and the Colloidal Transport of Metals

Research on the Prediction of Mine Drainage and the Colloidal Transport of Metals Heather Jamieson, Martha Buckwalter-Davis, Jessica Dongas and Lindsay Fenwick Department of Geological Sciences and Geological

BIOHEAPLEACHING Marja Riekkola-Vanhanen Senior Biotechnology Adviser

BIOHEAPLEACHING Marja Riekkola-Vanhanen Senior Biotechnology Adviser 2 Short history of bioleaching Copper recovery from mine waters in the Mediterranean area 3000 years ago Heapleaching in Spain in big

Experiment 5. Chemical Reactions A + X AX AX A + X A + BX AX + B AZ + BX AX + BZ

Experiment 5 Chemical Reactions OBJECTIVES 1. To observe the various criteria that are used to indicate that a chemical reaction has occurred. 2. To convert word equations into balanced inorganic chemical

Major Ions in Water. Training module # WQ - 28. New Delhi, September 1999

World Bank & Government of The Netherlands funded Training module # WQ - 28 Major Ions in Water New Delhi, September 1999 CSMRS Building, 4th Floor, Olof Palme Marg, Hauz Khas, New Delhi 11 00 16 India

Interactions in Multi-

Interactions in Multi- Component Mineral Systems Oleg N. Antzutkin (coordinator) 1, Hanumantha Rao 2, Fatai Ikumapaiy 2, Björn Johansson 4, Andreas Berggren 4, Allan Holmgren 1, Anna-Carin Larsson 1, Sven

EXTRACTION OF METALS

1 EXTRACTION OF METALS Occurrence ores of some metals are very common (iron, aluminium) others occur only in limited quantities in selected areas ores need to be purified before being reduced to the metal

SOFIA UNIVERSITY ST. KLIMENT OHRIDSKI Faculty:...Chemistry and Pharmacy... Subject area: (code and name) C H L 3 8 2 4 1 3

Approved by:.. Dean Date... SOFIA UNIVERSITY ST. KLIMENT OHRIDSKI Faculty:...Chemistry and Pharmacy... Subject area: (code and name) C H L 3 8 3...Pharmacy... M.Sc. Program: (code and name) C H L 3 8 3...Pharmacy...

CHEMICAL REACTIONS AND REACTING MASSES AND VOLUMES

CHEMICAL REACTIONS AND REACTING MASSES AND VOLUMES The meaning of stoichiometric coefficients: 2 H 2 (g) + O 2 (g) 2 H 2 O(l) number of reacting particles 2 molecules of hydrogen react with 1 molecule

EXPERIMENT 8: Activity Series (Single Displacement Reactions)

EPERIMENT 8: Activity Series (Single Displacement Reactions) PURPOSE a) Reactions of metals with acids and salt solutions b) Determine the activity of metals c) Write a balanced molecular equation, complete

Complexometric Titrations

Complexometric Titrations Complexometric titrations are based on the formation of a soluble complex upon the reaction of the species titrated with the titrant. M + L ML In the module Chemistry 2 you were

Santa Monica College Chemistry 11

Types of Reactions Objectives The objectives of this laboratory are as follows: To perform and observe the results of a variety of chemical reactions. To become familiar with the observable signs of chemical

Experiment 16-Acids, Bases and ph

Definitions acid-an ionic compound that releases or reacts with water to form hydrogen ion (H + ) in aqueous solution. They taste sour and turn litmus red. Acids react with certain metals such as zinc,

Writing and Balancing Chemical Equations

Name Writing and Balancing Chemical Equations Period When a substance undergoes a chemical reaction, chemical bonds are broken and new bonds are formed. This results in one or more new substances, often

SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, "Chemistry 11", McGraw-Hill Ryerson, 2001

SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, "Chemistry 11", McGraw-Hill Ryerson, 2001 1. A small pin contains 0.0178 mol of iron. How many atoms of iron are in the pin? 2. A sample

In addition, a control wood bark test (without rock) was installed 10 weeks after all the other tests had begun. This control test consisted of approximately 10 kg of uncompacted wood bark placed in a

EDULABZ. Na 2 + H 2 CO 3. O + CO 2 (b) CaO + H 2. + NaCl AgCl + NaNO 3 3. Which of the following reactions does not take place?

4 TRANSFORMATION OF SUBSTANCE I. Multiple choice questions: (Tick the correct option). 1. The reaction between magnesium and oxygen is: (a) an endothermic reaction (b) an exothermic reaction (c) a catalysed

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

Question Bank Electrolysis

Question Bank Electrolysis 1. (a) What do you understand by the terms (i) electrolytes (ii) non-electrolytes? (b) Arrange electrolytes and non-electrolytes from the following substances (i) sugar solution

Solution. Practice Exercise. Concept Exercise

Example Exercise 8.1 Evidence for a Reaction Which of the following is experimental evidence for a chemical reaction? (a) Pouring vinegar on baking soda gives foamy bubbles. (b) Mixing two solutions produces

Balancing Reaction Equations Oxidation State Reduction-oxidation Reactions

Balancing Reaction Equations Oxidation State Reduction-oxidation Reactions OCN 623 Chemical Oceanography Balanced chemical reactions are the math of chemistry They show the relationship between the reactants

Mine waste stabilization with biosludge and paper mill waste 1

Mine waste stabilization with biosludge and paper mill waste 1 Roger B. Herbert 2 and Linda Höckert 3 2 Department of Earth Sciences, Uppsala University, S 752 36 Uppsala, Sweden, roger.herbert@geo.uu.se

ION EXCHANGE FOR DUMMIES. An introduction

ION EXCHANGE FOR DUMMIES An introduction Water Water is a liquid. Water is made of water molecules (formula H 2 O). All natural waters contain some foreign substances, usually in small amounts. The water

2. ATOMIC, MOLECULAR AND EQUIVALENT MASSES

2. ATOMIC, MOLECULAR AND EQUIVALENT MASSES INTRODUCTION: EQUIVALENT WEIGHT Since hydrogen is the lightest of all elements, it was chosen as a standard for determination of equivalent weights. On this basis,

Removing Heavy Metals from Wastewater

Removing Heavy Metals from Wastewater Engineering Research Center Report David M. Ayres Allen P. Davis Paul M. Gietka August 1994 1 2 Removing Heavy Metals From Wastewater Introduction This manual provides

Printed Circuit Board Recycling Methods

Printed Circuit Board Recycling Methods 1. Introduction to Printed Circuit Boards The Printed Circuit Board (PCB 1 ) manufacturing process is very complicated, involving many special chemicals and valuable

Neutralization of Acid Mine Drainage Using Stabilized Flue Gas Desulfurization Material

Neutralization of Acid Mine Drainage Using Stabilized Flue Gas Desulfurization Material W. Wolfe 1, C.-M. Cheng 1, R. Baker 1, T. Butalia 1, J. Massey-Norton 2 1 The Ohio State University, 2 American Electric

Atomic Structure. Name Mass Charge Location Protons 1 +1 Nucleus Neutrons 1 0 Nucleus Electrons 1/1837-1 Orbit nucleus in outer shells

Atomic Structure called nucleons Name Mass Charge Location Protons 1 +1 Nucleus Neutrons 1 0 Nucleus Electrons 1/1837-1 Orbit nucleus in outer shells The number of protons equals the atomic number This

1332 CHAPTER 18 Sample Questions

1332 CHAPTER 18 Sample Questions Couple E 0 Couple E 0 Br 2 (l) + 2e 2Br (aq) +1.06 V AuCl 4 + 3e Au + 4Cl +1.00 V Ag + + e Ag +0.80 V Hg 2+ 2 + 2e 2 Hg +0.79 V Fe 3+ (aq) + e Fe 2+ (aq) +0.77 V Cu 2+

Decomposition. Composition

Decomposition 1. Solid ammonium carbonate is heated. 2. Solid calcium carbonate is heated. 3. Solid calcium sulfite is heated in a vacuum. Composition 1. Barium oxide is added to distilled water. 2. Phosphorus

Water remediation: Passive Treatment Technologies

Presenter: Jacques Meyer Project design: Adrian Haagner, Piet Smit & Jacques Meyer Water remediation: Passive Treatment Technologies Using a sub-surface flow wetland on a rehabilitated decommissioned coal

MOLES AND MOLE CALCULATIONS

35 MOLES ND MOLE CLCULTIONS INTRODUCTION The purpose of this section is to present some methods for calculating both how much of each reactant is used in a chemical reaction, and how much of each product

Metals and Non-metals. Comparison of physical properties of metals and non metals

Metals and Non-metals Comparison of physical properties of metals and non metals PHYSICAL PROPERTY METALS NON-METALS Physical State Metallic lustre (having a shining surface) Mostly solids (Liquid -mercury)

ATOMS. Multiple Choice Questions

Chapter 3 ATOMS AND MOLECULES Multiple Choice Questions 1. Which of the following correctly represents 360 g of water? (i) 2 moles of H 2 0 (ii) 20 moles of water (iii) 6.022 10 23 molecules of water (iv)

THE NWF WATER PURIFICATION PROCESS FRESH WATER IN A NATURAL WAY. Esko Meloni Ferroplan Oy

THE NWF WATER PURIFICATION PROCESS FRESH WATER IN A NATURAL WAY Esko Meloni Ferroplan Oy 1 The NWF Water Purification Process: list of contents 1. NWF biological purification of groundwater Iron and manganese

Chapter 8 Atomic Electronic Configurations and Periodicity

Chapter 8 Electron Configurations Page 1 Chapter 8 Atomic Electronic Configurations and Periodicity 8-1. Substances that are weakly attracted to a magnetic field but lose their magnetism when removed from

ION EXCHANGE RESINS INTRODUCTION

ION EXANGE RESINS Ion exchange resins are polymers that are capable of exchanging particular ions within the polymer with ions in a solution that is passed through them. This ability is also seen in various

100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals.

2.21 Ionic Bonding 100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals. Forming ions Metal atoms lose electrons to form +ve ions. Non-metal

Calculation of Molar Masses. Molar Mass. Solutions. Solutions

Molar Mass Molar mass = Mass in grams of one mole of any element, numerically equal to its atomic weight Molar mass of molecules can be determined from the chemical formula and molar masses of elements

REACTIONS OF SOME TRANSITION METAL IONS

Transition Metals 2815 1 REACTIONS OF SOME TRANSITION METAL IONS COBALT Cobalt(II) aqueous solutions contain the pink, octahedral hexaaquacobalt(ii) ion. hexaaqua ions can also be present in solid samples

Number of moles of solute = Concentration (mol. L ) x Volume of solution (litres) or n = C x V

44 CALCULATIONS INVOLVING SOLUTIONS INTRODUCTION AND DEFINITIONS Many chemical reactions take place in aqueous (water) solution. Quantities of such solutions are measured as volumes, while the amounts

Aqueous Solutions. Water is the dissolving medium, or solvent. Some Properties of Water. A Solute. Types of Chemical Reactions.

Aqueous Solutions and Solution Stoichiometry Water is the dissolving medium, or solvent. Some Properties of Water Water is bent or V-shaped. The O-H bonds are covalent. Water is a polar molecule. Hydration

Chapter 17. How are acids different from bases? Acid Physical properties. Base. Explaining the difference in properties of acids and bases

Chapter 17 Acids and Bases How are acids different from bases? Acid Physical properties Base Physical properties Tastes sour Tastes bitter Feels slippery or slimy Chemical properties Chemical properties

10 The Mole. Section 10.1 Measuring Matter

Name Date Class The Mole Section.1 Measuring Matter In your textbook, read about counting particles. In Column B, rank the quantities from Column A from smallest to largest. Column A Column B 0.5 mol 1.

6 Reactions in Aqueous Solutions

6 Reactions in Aqueous Solutions Water is by far the most common medium in which chemical reactions occur naturally. It is not hard to see this: 70% of our body mass is water and about 70% of the surface

General Chemistry Lab Experiment 6 Types of Chemical Reaction

General Chemistry Lab Experiment 6 Types of Chemical Reaction Introduction Most ordinary chemical reactions can be classified as one of five basic types. The first type of reaction occurs when two or more

CHEMICAL REACTIONS OF COPPER AND PERCENT YIELD KEY

CHEMICAL REACTIONS OF COPPER AND PERCENT YIELD Objective To gain familiarity with basic laboratory procedures, some chemistry of a typical transition element, and the concept of percent yield. Apparatus

Total Suspended Solids Total Dissolved Solids Hardness

Total Suspended Solids (TSS) are solids in water that can be trapped by a filter. TSS can include a wide variety of material, such as silt, decaying plant and animal matter, industrial wastes, and sewage.

Coal Properties, Sampling & Ash Characteristics by Rod Hatt Coal Combustion, Inc. Versailles, KY 859-873-0188

Coal Properties, Sampling & Ash Characteristics by Rod Hatt Coal Combustion, Inc. Versailles, KY 859-873-0188 Introduction The Powder River Coal is classified as sub-bituminous ranked coal. Coal rank is

Physical Changes and Chemical Reactions

Physical Changes and Chemical Reactions Gezahegn Chaka, Ph.D., and Sudha Madhugiri, Ph.D., Collin College Department of Chemistry Objectives Introduction To observe physical and chemical changes. To identify

Ch. 10 The Mole I. Molar Conversions

Ch. 10 The Mole I. Molar Conversions I II III IV A. What is the Mole? A counting number (like a dozen) Avogadro s number (N A ) 1 mole = 6.022 10 23 representative particles B. Mole/Particle Conversions

Chapter 5. Chemical Reactions and Equations. Introduction. Chapter 5 Topics. 5.1 What is a Chemical Reaction

Introduction Chapter 5 Chemical Reactions and Equations Chemical reactions occur all around us. How do we make sense of these changes? What patterns can we find? 1 2 Copyright The McGraw-Hill Companies,

ANALYTICAL REPORT LABORATORY DETAILS. Telephone Facsimile Email. SGS Reference Report Number Date Reported Date Received

ANALYTICAL REPORT CLIENT DETAILS Contact Client Address Matthew Behre SGS Metallurgical Services 431 Victoria Street Malaga MALAGA WA 6090 LABORATORY DETAILS Manager Laboratory Address Said Hirad SGS Newburn

Chemistry: Chemical Equations

Chemistry: Chemical Equations Write a balanced chemical equation for each word equation. Include the phase of each substance in the equation. Classify the reaction as synthesis, decomposition, single replacement,

Chemistry at Work. How Chemistry is used in the Water Service

Chemistry at Work How Chemistry is used in the Water Service WATER TREATMENT Everyday, more than 100 water treatment works in Northern Ireland put approximately 680 million litres of water into the supply

19.2 Chemical Formulas

In the previous section, you learned how and why atoms form chemical bonds with one another. You also know that atoms combine in certain ratios with other atoms. These ratios determine the chemical formula

neutrons are present?

AP Chem Summer Assignment Worksheet #1 Atomic Structure 1. a) For the ion 39 K +, state how many electrons, how many protons, and how many 19 neutrons are present? b) Which of these particles has the smallest

WHAT IS IN FERTILIZER OTHER THAN NUTRIENTS?

WHAT IS IN FERTILIZER OTHER THAN NUTRIENTS? Raymond C. Ward Ward Laboratories Inc. Kearney, NE Commercial fertilizer is a source of plant nutrients that can be applied to soil to nourish crops when the

GUIDELINES FOR LEACHATE CONTROL

GUIDELINES FOR LEACHATE CONTROL The term leachate refers to liquids that migrate from the waste carrying dissolved or suspended contaminants. Leachate results from precipitation entering the landfill and

JUNIOR COLLEGE CHEMISTRY DEPARTMENT EXPERIMENT 21 SECOND YEAR PRACTICAL. Name: Group: Date: THE CHEMISTRY OF COPPER AND IRON

JUNIOR COLLEGE CHEMISTRY DEPARTMENT EXPERIMENT 21 SECOND YEAR PRACTICAL Name: Group: Date: COPPER THE CHEMISTRY OF COPPER AND IRON 1. To a solution of Cu 2+ ions add aqueous sodium hydroxide and heat the

The Electrical Control of Chemical Reactions E3-1

Experiment 3 The Electrical Control of Chemical Reactions E3-1 E3-2 The Task In this experiment you will explore the processes of oxidation and reduction, in which electrons flow between materials, and

Chapter 5. Chapter 5. Naming Ionic Compounds. Objectives. Chapter 5. Chapter 5

Objectives Name cations, anions, and ionic compounds. Write chemical formulas for ionic compounds such that an overall neutral charge is maintained. Explain how polyatomic ions and their salts are named

Best Practice in Boiler Water Treatment

Best Practice in Boiler Water Treatment Boiler Water Treatment Part 2 Internal Treatment Objectives of Internal Water Treatment 1 To control the level of total dissolved solids (TDS) within the boiler

Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

Introduction to Chemistry Exam 2 Practice Problems 1 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1.Atoms consist principally of what three

Chapter 9 Practice Test - Naming and Writing Chemical Formulas

Chapter 9 Practice Test - Naming and Writing Chemical Formulas Matching Match each itme with the correct statement below. Match each item with the correct statement below. a. monatomic ion f. cation b.

1. Read P. 368-375, P. 382-387 & P. 429-436; P. 375 # 1-11 & P. 389 # 1,7,9,12,15; P. 436 #1, 7, 8, 11

SCH3U- R.H.KING ACADEMY SOLUTION & ACID/BASE WORKSHEET Name: The importance of water - MAKING CONNECTION READING 1. Read P. 368-375, P. 382-387 & P. 429-436; P. 375 # 1-11 & P. 389 # 1,7,9,12,15; P. 436

Moles, Molecules, and Grams Worksheet Answer Key

Moles, Molecules, and Grams Worksheet Answer Key 1) How many are there in 24 grams of FeF 3? 1.28 x 10 23 2) How many are there in 450 grams of Na 2 SO 4? 1.91 x 10 24 3) How many grams are there in 2.3

Environmental Technology March/April 1998

Treating Metal Finishing Wastewater Sultan I. Amer, Ph.D. AQUACHEM INC. Environmental Technology March/April 1998 Wastewater from metal finishing industries contains high concentrations of contaminants

W1 WORKSHOP ON STOICHIOMETRY

INTRODUCTION W1 WORKSHOP ON STOICHIOMETRY These notes and exercises are designed to introduce you to the basic concepts required to understand a chemical formula or equation. Relative atomic masses of

Introduction to electrolysis - electrolytes and non-electrolytes

Introduction to electrolysis - electrolytes and non-electrolytes Electrolysis is the process of electrically inducing chemical changes in a conducting melt or solution e.g. splitting an ionic compound

HOMEWORK 4A. Definitions. Oxidation-Reduction Reactions. Questions

HOMEWORK 4A Oxidation-Reduction Reactions 1. Indicate whether a reaction will occur or not in each of following. Wtiring a balcnced equation is not necessary. (a) Magnesium metal is added to hydrochloric

Study Guide For Chapter 7

Name: Class: Date: ID: A Study Guide For Chapter 7 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The number of atoms in a mole of any pure substance

Coimisiún na Scrúduithe Stáit State Examinations Commission

2015. M33 Coimisiún na Scrúduithe Stáit State Examinations Commission LEAVING CERTIFICATE EXAMINATION, 2015 CHEMISTRY ORDINARY LEVEL TUESDAY, 16 JUNE AFTERNOON 2.00 TO 5.00 400 MARKS Answer eight questions

Description of the Mole Concept:

Description of the Mole Concept: Suppose you were sent into the store to buy 36 eggs. When you picked them up you would get 3 boxes, each containing 12 eggs. You just used a mathematical device, called

Appendix D. Reaction Stoichiometry D.1 INTRODUCTION

Appendix D Reaction Stoichiometry D.1 INTRODUCTION In Appendix A, the stoichiometry of elements and compounds was presented. There, the relationships among grams, moles and number of atoms and molecules

Question Bank Sulphur Dioxide and Sulphuric Acid

Question Bank Sulphur Dioxide and Sulphuric Acid 1. Write equations for the preparation of sulphur dioxide gas from : (i) sodium sulphite (ii) sodium bisulphite [2] Ans. (i) Na 2 SO 3 + H 2 SO 4 (dil.)

DEIONIZATION IN A "NUT SHELL"

Deionized Water (DI) DEIONIZATION IN A "NUT SHELL" City water is passed through dark amber colored, caviar sized plastic beads called cation ion exchange resin. The cation resin is in the hydrogen form

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

GEOL 414/514 CARBONATE CHEMISTRY

GEOL 414/514 CARBONATE CHEMISTRY Chapter 6 LANGMUIR SOLUBILITY OF CALCITE CaCO 3 in nature: calcite & aragonite Reaction with strong acid: CaCO 3 + 2H + Ca +2 + H 2 O + CO 2 Reaction with weak acid: CaCO

Metal Ion + EDTA Metal EDTA Complex

Simplified Removal of Chelated Metals Sultan I. Amer, AQUACHEM INC. Metal Finishing, April 2004, Vol. 102 No. 4 Chelating agents are used in large quantities in industrial applications involving dissolved

The formation of polluted mine water

The formation of polluted mine water Abandoned Mine Drainage How it happens How we can fix it Bruce Golden Western PA Coalition for Abandoned Mine Reclamation What we ll cover Brief Discussion about Mining

ENVIRONMENTAL MANAGEMENT: CLEAN WATER RESEARCH AS RELATED TO ACID MINE DRAINAGE

ENVIRONMENTAL MANAGEMENT: CLEAN WATER RESEARCH AS RELATED TO ACID MINE DRAINAGE LESSON PLAN CREATED BY: Todd Mills (Grades 9 12) Lois Morris (Grades 6-8) Terry Rostcheck (Grades 6 8) Susan Tegi (Grades

Moles. Moles. Moles. Moles. Balancing Eqns. Balancing. Balancing Eqns. Symbols Yields or Produces. Like a recipe:

Like a recipe: Balancing Eqns Reactants Products 2H 2 (g) + O 2 (g) 2H 2 O(l) coefficients subscripts Balancing Eqns Balancing Symbols (s) (l) (aq) (g) or Yields or Produces solid liquid (pure liquid)

Stoichiometry Review

Stoichiometry Review There are 20 problems in this review set. Answers, including problem set-up, can be found in the second half of this document. 1. N 2 (g) + 3H 2 (g) --------> 2NH 3 (g) a. nitrogen

David A. Katz Chemist, Educator, Science Communicator, and Consultant Department of Chemistry, Pima Community College

WRITING CHEMICAL EQUATIONS 2004, 2002, 1989 by David A. Katz. All rights reserved. Permission for classroom used provided original copyright is included. David A. Katz Chemist, Educator, Science Communicator,

Hydrothermal Solutions and Ore Deposits

Hydrothermal Solutions and Ore Deposits Physical Chemistry of Minerals and Aqueous Solutions D.M. Sherman, University of Bristol Chalcophiles, Lithophiles, Siderophiles.. Lithophile = oxides, silicates

Topic 4 National Chemistry Summary Notes. Formulae, Equations, Balancing Equations and The Mole

Topic 4 National Chemistry Summary Notes Formulae, Equations, Balancing Equations and The Mole LI 1 The chemical formula of a covalent molecular compound tells us the number of atoms of each element present

(b) Formation of calcium chloride:

Chapter 2: Chemical Compounds and Bonding Section 2.1: Ionic Compounds, pages 22 23 1. An ionic compound combines a metal and a non-metal joined together by an ionic bond. 2. An electrostatic force holds

Using composting beds to treat acidity in saline drain water

Government of Western Australia Department of Water Using composting beds to treat acidity in saline drain water Introduction Acidic saline water is common in drains used to manage shallow saline watertables

B) atomic number C) both the solid and the liquid phase D) Au C) Sn, Si, C A) metal C) O, S, Se C) In D) tin D) methane D) bismuth B) Group 2 metal

1. The elements on the Periodic Table are arranged in order of increasing A) atomic mass B) atomic number C) molar mass D) oxidation number 2. Which list of elements consists of a metal, a metalloid, and

Characterizing Beauty Salon Wastewater for the Purpose of Regulating Onsite Disposal Systems

Characterizing Beauty Salon Wastewater for the Purpose of Regulating Onsite Disposal Systems Fred Bowers 1,2, Ph.D. New Jersey Department of Environmental Protection Division of Water Quality August 14,