3. Combustion is a chemical process in which a fuel combines with to release energy and form products. A. oxygen B. nitrogen C. methane D.
|
|
|
- Kimberly Curtis
- 7 years ago
- Views:
Transcription
1 Exam 2 CHEM 1100 Version #1 Student: 1. The heat energy released or absorbed by a chemical reaction is generally determined by the difference between the energy that A. must be put in to break the bonds in the reactants and the energy that must be put in to make the bonds in the products. B. is released upon breaking the bonds in the reactants and the energy that is released upon making the bonds in the products. C. is released upon breaking the bonds in the reactants and the energy that must be put in to make the bonds in the products. D. must be put in to break the bonds in the reactants and the energy that is released upon making the bonds in the products. 2. A polar covalent bond is created when A. two atoms share their bonding electrons unequally. B. two atoms share three or more electrons. C. a metallic element reacts with a nonmetallic element. D. two atoms of the same element form double or triple bonds. 3. Combustion is a chemical process in which a fuel combines with to release energy and form products. A. oxygen B. nitrogen C. methane D. hydrogen 4. The energy that flows from a warmer body to a colder body is called A. heat. B. work. C. temperature. D. potential.
2 5. Which corresponds to the composition of the ion typically formed by fluorine? A. C B. A C. D D. B 6. The numbers 1 through 4 are used to identify four different elements on the periodic table. Which element is expected to have 2+ charge when it forms an ion? A. 3 B. 1 C. 2 D What is an aquifer? A. a large pool of water trapped in sand and gravel below the surface of the earth B. a solution in which the solvent is water C. a water purification system developed by the Romans D. a holding tank for disinfected water at the municipal water works 8. Which is a fossil fuel? A. ethanol B. uranium C. wood D. natural gas 9. The energy needed to initiate a chemical reaction is called the A. renewable energy. B. activation energy. C. heat of combustion. D. bond energy.
3 10. Based on this reaction and its energy profile, CH 4 (g) + 2O 2 (g) CO 2 (g) + 2H 2 O(g) the reaction A. is exothermic. B. is endothermic. C. violates the first law of thermodynamics. D. has a high activation energy. 11. Which covalent bond is the most polar? A. H N B. H S C. H H D. H O 12. The energy stored in the chemical bonds of fossil fuels is a form of energy. A. electrical B. kinetic C. mechanical D. potential
4 13. According to the graph below, the major source of energy in the United States during the years 1900 to 1950 was A. coal. B. wood. C. natural gas. D. petroleum. 14. Which is produced in the greatest amount from a barrel of petroleum? A. home heating oil B. gasoline C. asphalt and road oil D. lubricants and waxes 15. The attractions between anions and cations throughout a crystal are known collectively as A. hydrogen bonds. B. covalent bonds. C. ionic bonds. D. polar covalent bonds. 16. In a typical power plant, the combustion of a fuel is used to boil water. The steam then causes a turbine to spin. At this stage, the potential energy of the fuel has been transformed into energy of the spinning turbine. A. mechanical B. potential C. electrical D. kinetic
5 17. Which shows the Lewis structure of water with the correct partial charges and nonbonding electrons? A. B. C. D. 18. Though costs vary widely, bottled water is approximately times more expensive than tap water. A. 10 to 20 B. 100 to 1,000 C. 50 to 100 D. 250 to 10, If the lead concentration in water is 1 ppm, then we should be able to recover 1 mg of lead from L of water. A. 1 B C. 10 D In the petroleum industry, what does a refinery do? A. It separates crude oil from the coal with which it is almost always found. B. It produces the machinery by which crude oil is removed from the ground. C. It separates crude oil into fractions consisting of compounds with similar boiling points. D. It mixes natural gas or coal with crude oil in order to remove the impurities from the crude oil. 21. In an exothermic chemical reaction A. heat is released as the reaction proceeds. B. heat is absorbed as the reaction proceeds. C. the mass of the products is less than the mass of the reactants. D. the mass of the products is greater than the mass of the reactants.
6 22. The drawing shows two water molecules. Which statement is correct? A. A: covalent bond; B: hydrogen bond; B is stronger B. A: hydrogen bond; B: covalent bond; B is stronger C. A: covalent bond; B: hydrogen bond; A is stronger D. A: hydrogen bond; B: covalent bond; A is stronger 23. The property of matter that determines the direction of heat flow is the A. volume. B. mass. C. temperature. D. density. 24. The main reason that water supplies are "chlorinated" is A. to kill disease-causing organisms in the water. B. to produce gels that remove solids from the water. C. to soften the water. D. to precipitate lead salts from the water as insoluble lead chloride. 25. What is the correct name for (NH 4 ) 2 CO 3? A. ammonium carboxide B. biammonium carbonate C. ammonium carbonate D. ammonium bicarbonate
7 Exam 2 CHEM 1100 Key Version #1
8 1. The heat energy released or absorbed by a chemical reaction is generally determined by the difference between the energy that A. must be put in to break the bonds in the reactants and the energy that must be put in to make the bonds in the products. B. is released upon breaking the bonds in the reactants and the energy that is released upon making the bonds in the products. C. is released upon breaking the bonds in the reactants and the energy that must be put in to make the bonds in the products. D. must be put in to break the bonds in the reactants and the energy that is released upon making the bonds in the products. 2. A polar covalent bond is created when A. two atoms share their bonding electrons unequally. B. two atoms share three or more electrons. C. a metallic element reacts with a nonmetallic element. D. two atoms of the same element form double or triple bonds. 3. Combustion is a chemical process in which a fuel combines with to release energy and form products. A. oxygen B. nitrogen C. methane D. hydrogen 4. The energy that flows from a warmer body to a colder body is called A. heat. B. work. C. temperature. D. potential. 5. Which corresponds to the composition of the ion typically formed by fluorine? A. C B. A C. D D. B
9 6. The numbers 1 through 4 are used to identify four different elements on the periodic table. Which element is expected to have 2+ charge when it forms an ion? A. 3 B. 1 C. 2 D What is an aquifer? A. a large pool of water trapped in sand and gravel below the surface of the earth B. a solution in which the solvent is water C. a water purification system developed by the Romans D. a holding tank for disinfected water at the municipal water works 8. Which is a fossil fuel? A. ethanol B. uranium C. wood D. natural gas 9. The energy needed to initiate a chemical reaction is called the A. renewable energy. B. activation energy. C. heat of combustion. D. bond energy.
10 10. Based on this reaction and its energy profile, CH 4 (g) + 2O 2 (g) CO 2 (g) + 2H 2 O(g) the reaction A. is exothermic. B. is endothermic. C. violates the first law of thermodynamics. D. has a high activation energy. 11. Which covalent bond is the most polar? A. H N B. H S C. H H D. H O 12. The energy stored in the chemical bonds of fossil fuels is a form of energy. A. electrical B. kinetic C. mechanical D. potential
11 13. According to the graph below, the major source of energy in the United States during the years 1900 to 1950 was A. coal. B. wood. C. natural gas. D. petroleum. 14. Which is produced in the greatest amount from a barrel of petroleum? A. home heating oil B. gasoline C. asphalt and road oil D. lubricants and waxes 15. The attractions between anions and cations throughout a crystal are known collectively as A. hydrogen bonds. B. covalent bonds. C. ionic bonds. D. polar covalent bonds. 16. In a typical power plant, the combustion of a fuel is used to boil water. The steam then causes a turbine to spin. At this stage, the potential energy of the fuel has been transformed into energy of the spinning turbine. A. mechanical B. potential C. electrical D. kinetic
12 17. Which shows the Lewis structure of water with the correct partial charges and nonbonding electrons? A. B. C. D. American Chapter... # Though costs vary widely, bottled water is approximately times more expensive than tap water. A. 10 to 20 B. 100 to 1,000 C. 50 to 100 D. 250 to 10, If the lead concentration in water is 1 ppm, then we should be able to recover 1 mg of lead from L of water. A. 1 B C. 10 D In the petroleum industry, what does a refinery do? A. It separates crude oil from the coal with which it is almost always found. B. It produces the machinery by which crude oil is removed from the ground. C. It separates crude oil into fractions consisting of compounds with similar boiling points. D. It mixes natural gas or coal with crude oil in order to remove the impurities from the crude oil.
13 21. In an exothermic chemical reaction A. heat is released as the reaction proceeds. B. heat is absorbed as the reaction proceeds. C. the mass of the products is less than the mass of the reactants. D. the mass of the products is greater than the mass of the reactants. 22. The drawing shows two water molecules. Which statement is correct? A. A: covalent bond; B: hydrogen bond; B is stronger B. A: hydrogen bond; B: covalent bond; B is stronger C. A: covalent bond; B: hydrogen bond; A is stronger D. A: hydrogen bond; B: covalent bond; A is stronger 23. The property of matter that determines the direction of heat flow is the A. volume. B. mass. C. temperature. D. density. 24. The main reason that water supplies are "chlorinated" is A. to kill disease-causing organisms in the water. B. to produce gels that remove solids from the water. C. to soften the water. D. to precipitate lead salts from the water as insoluble lead chloride. 25. What is the correct name for (NH 4 ) 2 CO 3? A. ammonium carboxide B. biammonium carbonate C. ammonium carbonate D. ammonium bicarbonate
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.
CHEM 150 Exam 1 KEY Name Multiple Choice
CEM 150 Exam 1 KEY Name Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. _B 1. Which of the following is synonymous with "fact"? a. a hypothesis
ATOMS AND BONDS. Bonds
ATOMS AND BONDS Atoms of elements are the simplest units of organization in the natural world. Atoms consist of protons (positive charge), neutrons (neutral charge) and electrons (negative charge). The
Bonding Practice Problems
NAME 1. When compared to H 2 S, H 2 O has a higher 8. Given the Lewis electron-dot diagram: boiling point because H 2 O contains stronger metallic bonds covalent bonds ionic bonds hydrogen bonds 2. Which
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
Chapter 6 Assessment. Name: Class: Date: ID: A. Multiple Choice Identify the choice that best completes the statement or answers the question.
Name: Class: Date: ID: A Chapter 6 Assessment Multiple Choice Identify the choice that best completes the statement or answers the question. 1. When an atom loses an electron, it forms a(n) a. anion. c.
87 16 70 20 58 24 44 32 35 40 29 48 (a) graph Y versus X (b) graph Y versus 1/X
HOMEWORK 5A Barometer; Boyle s Law 1. The pressure of the first two gases below is determined with a manometer that is filled with mercury (density = 13.6 g/ml). The pressure of the last two gases below
Chemistry B11 Chapter 4 Chemical reactions
Chemistry B11 Chapter 4 Chemical reactions Chemical reactions are classified into five groups: A + B AB Synthesis reactions (Combination) H + O H O AB A + B Decomposition reactions (Analysis) NaCl Na +Cl
Chemical Equations and Chemical Reactions. Chapter 8.1
Chemical Equations and Chemical Reactions Chapter 8.1 Objectives List observations that suggest that a chemical reaction has taken place List the requirements for a correctly written chemical equation.
Chemical Reactions Practice Test
Chemical Reactions Practice Test Chapter 2 Name Date Hour _ Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The only sure evidence for a chemical reaction
1. The graph below represents the potential energy changes that occur in a chemical reaction. Which letter represents the activated complex?
1. The graph below represents the potential energy changes that occur in a chemical reaction. Which letter represents the activated complex? 4. According to the potential energy diagram shown above, the
Chapter 8: Chemical Equations and Reactions
Chapter 8: Chemical Equations and Reactions I. Describing Chemical Reactions A. A chemical reaction is the process by which one or more substances are changed into one or more different substances. A chemical
Chapter 2 The Chemical Context of Life
Chapter 2 The Chemical Context of Life Multiple-Choice Questions 1) About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 elements make up approximately 96% of living
Review - After School Matter Name: Review - After School Matter Tuesday, April 29, 2008
Name: Review - After School Matter Tuesday, April 29, 2008 1. Figure 1 The graph represents the relationship between temperature and time as heat was added uniformly to a substance starting at a solid
Chapter 4: Structure and Properties of Ionic and Covalent Compounds
Chapter 4: Structure and Properties of Ionic and Covalent Compounds 4.1 Chemical Bonding o Chemical Bond - the force of attraction between any two atoms in a compound. o Interactions involving valence
KS3 Science: Chemistry Contents
summary KS3 Science MyWorks Guide Chemistry KS3 Science: Chemistry Mini zes: 40 Super zes: 5 Extension zes: 4 Skills zes: 6 TOTAL 54 What are MyWorks zes? MyWorks zes are short individual learning tasks
Chemical reactions allow living things to grow, develop, reproduce, and adapt.
Section 2: Chemical reactions allow living things to grow, develop, reproduce, and adapt. K What I Know W What I Want to Find Out L What I Learned Essential Questions What are the parts of a chemical reaction?
STATE UNIVERSITY OF NEW YORK COLLEGE OF TECHNOLOGY CANTON, NEW YORK COURSE OUTLINE CHEM 150 - COLLEGE CHEMISTRY I
STATE UNIVERSITY OF NEW YORK COLLEGE OF TECHNOLOGY CANTON, NEW YORK COURSE OUTLINE CHEM 150 - COLLEGE CHEMISTRY I PREPARED BY: NICOLE HELDT SCHOOL OF SCIENCE, HEALTH, AND PROFESSIONAL STUDIES SCIENCE DEPARTMENT
Test Bank - Chapter 4 Multiple Choice
Test Bank - Chapter 4 The questions in the test bank cover the concepts from the lessons in Chapter 4. Select questions from any of the categories that match the content you covered with students. The
Physical and Chemical Properties of Matter
Physical and Chemical Properties of Matter What is matter? Anything that has mass and takes up space Chemical or Physical Property? Physical properties of matter: characteristics that can be observed or
Chemical Bonds. Chemical Bonds. The Nature of Molecules. Energy and Metabolism < < Covalent bonds form when atoms share 2 or more valence electrons.
The Nature of Molecules Chapter 2 Energy and Metabolism Chapter 6 Chemical Bonds Molecules are groups of atoms held together in a stable association. Compounds are molecules containing more than one type
Chemistry Diagnostic Questions
Chemistry Diagnostic Questions Answer these 40 multiple choice questions and then check your answers, located at the end of this document. If you correctly answered less than 25 questions, you need to
stoichiometry = the numerical relationships between chemical amounts in a reaction.
1 REACTIONS AND YIELD ANSWERS stoichiometry = the numerical relationships between chemical amounts in a reaction. 2C 8 H 18 (l) + 25O 2 16CO 2 (g) + 18H 2 O(g) From the equation, 16 moles of CO 2 (a greenhouse
Chapter 5 Student Reading
Chapter 5 Student Reading THE POLARITY OF THE WATER MOLECULE Wonderful water Water is an amazing substance. We drink it, cook and wash with it, swim and play in it, and use it for lots of other purposes.
CHEMISTRY BONDING REVIEW
Answer the following questions. CHEMISTRY BONDING REVIEW 1. What are the three kinds of bonds which can form between atoms? The three types of Bonds are Covalent, Ionic and Metallic. Name Date Block 2.
A pure covalent bond is an equal sharing of shared electron pair(s) in a bond. A polar covalent bond is an unequal sharing.
CHAPTER EIGHT BNDING: GENERAL CNCEPT or Review 1. Electronegativity is the ability of an atom in a molecule to attract electrons to itself. Electronegativity is a bonding term. Electron affinity is the
Ionic and Covalent Bonds
Ionic and Covalent Bonds Ionic Bonds Transfer of Electrons When metals bond with nonmetals, electrons are from the metal to the nonmetal The becomes a cation and the becomes an anion. The between the cation
Lewis Dot Notation Ionic Bonds Covalent Bonds Polar Covalent Bonds Lewis Dot Notation Revisited Resonance
Lewis Dot Notation Ionic Bonds Covalent Bonds Polar Covalent Bonds Lewis Dot Notation Revisited Resonance Lewis Dot notation is a way of describing the outer shell (also called the valence shell) of an
Chapter 7: Chemical Energy
Chapter 7: Chemical Energy Goals of Period 7 Section 7.1: To describe atoms, chemical elements and compounds Section 7.2: To discuss the electromagnetic force and physical changes Section 7.3: To illustrate
COMBUSTION. In order to operate a heat engine we need a hot source together with a cold sink
COMBUSTION In order to operate a heat engine we need a hot source together with a cold sink Occasionally these occur together in nature eg:- geothermal sites or solar powered engines, but usually the heat
Bonds. Bond Length. Forces that hold groups of atoms together and make them function as a unit. Bond Energy. Chapter 8. Bonding: General Concepts
Bonds hapter 8 Bonding: General oncepts Forces that hold groups of atoms together and make them function as a unit. Bond Energy Bond Length It is the energy required to break a bond. The distance where
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
Chemistry 11 Some Study Materials for the Final Exam
Chemistry 11 Some Study Materials for the Final Exam Prefix Abbreviation Exponent giga G 10 9 mega M 10 6 kilo k 10 3 hecto h 10 2 deca da 10 1 deci d 10-1 centi c 10-2 milli m 10-3 micro µ 10-6 nano n
Chapter 8 Concepts of Chemical Bonding
Chapter 8 Concepts of Chemical Bonding Chemical Bonds Three types: Ionic Electrostatic attraction between ions Covalent Sharing of electrons Metallic Metal atoms bonded to several other atoms Ionic Bonding
Chapter Three: STOICHIOMETRY
p70 Chapter Three: STOICHIOMETRY Contents p76 Stoichiometry - The study of quantities of materials consumed and produced in chemical reactions. p70 3-1 Counting by Weighing 3-2 Atomic Masses p78 Mass Mass
Chapter 13 - LIQUIDS AND SOLIDS
Chapter 13 - LIQUIDS AND SOLIDS Problems to try at end of chapter: Answers in Appendix I: 1,3,5,7b,9b,15,17,23,25,29,31,33,45,49,51,53,61 13.1 Properties of Liquids 1. Liquids take the shape of their container,
Part B 2. Allow a total of 15 credits for this part. The student must answer all questions in this part.
Part B 2 Allow a total of 15 credits for this part. The student must answer all questions in this part. 51 [1] Allow 1 credit for 3 Mg(s) N 2 (g) Mg 3 N 2 (s). Allow credit even if the coefficient 1 is
CHAPTER 6 Chemical Bonding
CHAPTER 6 Chemical Bonding SECTION 1 Introduction to Chemical Bonding OBJECTIVES 1. Define Chemical bond. 2. Explain why most atoms form chemical bonds. 3. Describe ionic and covalent bonding.. 4. Explain
Composition of nucleus. Priority Vocabulary: Electron, Proton, Neutron, Nucleus, Isotopes, Atomic Number, Atomic Mass, Element, Electron Shell,
Lake County, Lakeview, 9 th grade, Physical Science, Brent Starr Standard: H1P1 Explain how atomic structure is related to the properties of elements and their position in the Periodic Table. Explain how
Stoichiometry. Lecture Examples Answer Key
Stoichiometry Lecture Examples Answer Key Ex. 1 Balance the following chemical equations: 3 NaBr + 1 H 3 PO 4 3 HBr + 1 Na 3 PO 4 2 C 3 H 5 N 3 O 9 6 CO 2 + 3 N 2 + 5 H 2 O + 9 O 2 2 Ca(OH) 2 + 2 SO 2
4.5 Physical Properties: Solubility
4.5 Physical Properties: Solubility When a solid, liquid or gaseous solute is placed in a solvent and it seems to disappear, mix or become part of the solvent, we say that it dissolved. The solute is said
CHEMISTRY STANDARDS BASED RUBRIC ATOMIC STRUCTURE AND BONDING
CHEMISTRY STANDARDS BASED RUBRIC ATOMIC STRUCTURE AND BONDING Essential Standard: STUDENTS WILL UNDERSTAND THAT THE PROPERTIES OF MATTER AND THEIR INTERACTIONS ARE A CONSEQUENCE OF THE STRUCTURE OF MATTER,
Test Review # 9. Chemistry R: Form TR9.13A
Chemistry R: Form TR9.13A TEST 9 REVIEW Name Date Period Test Review # 9 Collision theory. In order for a reaction to occur, particles of the reactant must collide. Not all collisions cause reactions.
Sample Exercise 8.1 Magnitudes of Lattice Energies
Sample Exercise 8.1 Magnitudes of Lattice Energies Without consulting Table 8.2, arrange the following ionic compounds in order of increasing lattice energy: NaF, CsI, and CaO. Analyze: From the formulas
5. Which temperature is equal to +20 K? 1) 253ºC 2) 293ºC 3) 253 C 4) 293 C
1. The average kinetic energy of water molecules increases when 1) H 2 O(s) changes to H 2 O( ) at 0ºC 3) H 2 O( ) at 10ºC changes to H 2 O( ) at 20ºC 2) H 2 O( ) changes to H 2 O(s) at 0ºC 4) H 2 O( )
3/5/2014. iclicker Participation Question: A. MgS < AlP < NaCl B. MgS < NaCl < AlP C. NaCl < AlP < MgS D. NaCl < MgS < AlP
Today: Ionic Bonding vs. Covalent Bonding Strengths of Covalent Bonds: Bond Energy Diagrams Bond Polarities: Nonpolar Covalent vs. Polar Covalent vs. Ionic Electronegativity Differences Dipole Moments
Chapter 2 Polar Covalent Bonds; Acids and Bases
John E. McMurry http://www.cengage.com/chemistry/mcmurry Chapter 2 Polar Covalent Bonds; Acids and Bases Javier E. Horta, M.D., Ph.D. University of Massachusetts Lowell Polar Covalent Bonds: Electronegativity
Coal-To-Gas & Coal-To-Liquids
Located in the Energy Center at Discovery Park, Purdue University Coal-To-Gas & Coal-To-Liquids CCTR Basic Facts File #3 Brian H. Bowen, Marty W. Irwin The Energy Center at Discovery Park Purdue University
Name Class Date. In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question.
Assessment Chapter Test A Chapter: States of Matter In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. 1. The kinetic-molecular
Sample Exercise 8.1 Magnitudes of Lattice Energies
Sample Exercise 8.1 Magnitudes of Lattice Energies Without consulting Table 8.2, arrange the ionic compounds NaF, CsI, and CaO in order of increasing lattice energy. Analyze From the formulas for three
20.2 Chemical Equations
All of the chemical changes you observed in the last Investigation were the result of chemical reactions. A chemical reaction involves a rearrangement of atoms in one or more reactants to form one or more
Chemistry 110 Lecture Unit 5 Chapter 11-GASES
Chemistry 110 Lecture Unit 5 Chapter 11-GASES I. PROPERITIES OF GASES A. Gases have an indefinite shape. B. Gases have a low density C. Gases are very compressible D. Gases exert pressure equally in all
Exam 2 Chemistry 65 Summer 2015. Score:
Name: Exam 2 Chemistry 65 Summer 2015 Score: Instructions: Clearly circle the one best answer 1. Valence electrons are electrons located A) in the outermost energy level of an atom. B) in the nucleus of
VCE CHEMISTRY UNIT 2 Environmental Chemistry SAMPLE COURSE OUTLINE
VCE CHEMISTRY UNIT 2 Environmental Chemistry SAMPLE COURSE OUTLINE Week Area of Study Key knowledge Possible activities Key skills 1 1 Water Role of water in maintaining life in the environment unique
Chapter 13 Properties of liquids
Chapter 13 Properties of liquids 1 over 75% of earth is covered with water water supports and enhance life in chemistry, water provides the medium of numerous reactions 13.1 What is a liquid? liquids lie
Chapter 3: Water and Life
Name Period Chapter 3: Water and Life Concept 3.1 Polar covalent bonds in water result in hydrogen bonding 1. Study the water molecules at the right. On the central molecule, label oxygen (O) and hydrogen
Thermodynamics Worksheet I also highly recommend Worksheets 13 and 14 in the Lab Manual
Thermodynamics Worksheet I also highly recommend Worksheets 13 and 14 in the Lab Manual 1. Predict the sign of entropy change in the following processes a) The process of carbonating water to make a soda
RELEASED. Student Booklet. Chemistry. Fall 2014 NC Final Exam. Released Items
Released Items Public Schools of North arolina State oard of Education epartment of Public Instruction Raleigh, North arolina 27699-6314 Fall 2014 N Final Exam hemistry Student ooklet opyright 2014 by
Balancing Chemical Equations
Balancing Chemical Equations Academic Success Center Science Tutoring Area Science Tutoring Area Law of Conservation of Mass Matter cannot be created nor destroyed Therefore the number of each type of
Science 20. Unit A: Chemical Change. Assignment Booklet A1
Science 20 Unit A: Chemical Change Assignment Booklet A FOR TEACHER S USE ONLY Summary Teacher s Comments Chapter Assignment Total Possible Marks 79 Your Mark Science 20 Unit A: Chemical Change Assignment
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
Phase diagram of water. Note: for H 2 O melting point decreases with increasing pressure, for CO 2 melting point increases with increasing pressure.
Phase diagram of water Note: for H 2 O melting point decreases with increasing pressure, for CO 2 melting point increases with increasing pressure. WATER Covers ~ 70% of the earth s surface Life on earth
CHAPTER 3: MATTER. Active Learning Questions: 1-6, 9, 13-14; End-of-Chapter Questions: 1-18, 20, 24-32, 38-42, 44, 49-52, 55-56, 61-64
CHAPTER 3: MATTER Active Learning Questions: 1-6, 9, 13-14; End-of-Chapter Questions: 1-18, 20, 24-32, 38-42, 44, 49-52, 55-56, 61-64 3.1 MATTER Matter: Anything that has mass and occupies volume We study
Chapter 8 Basic Concepts of the Chemical Bonding
Chapter 8 Basic Concepts of the Chemical Bonding 1. There are paired and unpaired electrons in the Lewis symbol for a phosphorus atom. (a). 4, 2 (b). 2, 4 (c). 4, 3 (d). 2, 3 Explanation: Read the question
Chapter 8 How to Do Chemical Calculations
Chapter 8 How to Do Chemical Calculations Chemistry is both a qualitative and a quantitative science. In the laboratory, it is important to be able to measure quantities of chemical substances and, as
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
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
(1) e.g. H hydrogen that has lost 1 electron c. anion - negatively charged atoms that gain electrons 16-2. (1) e.g. HCO 3 bicarbonate anion
GS106 Chemical Bonds and Chemistry of Water c:wou:gs106:sp2002:chem.wpd I. Introduction A. Hierarchy of chemical substances 1. atoms of elements - smallest particles of matter with unique physical and
Chapter 2. The Chemistry of Life Worksheets
Chapter 2 The Chemistry of Life Worksheets (Opening image courtesy of David Iberri, http://en.wikipedia.org/wiki/file:camkii.png, and under the Creative Commons license CC-BY-SA 3.0.) Lesson 2.1: Matter
SUPPLEMENTARY TOPIC 3 ENERGY AND CHEMICAL REACTIONS
SUPPLEMENTARY TOPIC 3 ENERGY AND CHEMICAL REACTIONS Rearranging atoms. In a chemical reaction, bonds between atoms in one or more molecules (reactants) break and new bonds are formed with other atoms to
Chem 1100 Chapter Three Study Guide Answers Outline I. Molar Mass and Moles A. Calculations of Molar Masses
Chem 1100 Chapter Three Study Guide Answers Outline I. Molar Mass and Moles A. Calculations of Molar Masses B. Calculations of moles C. Calculations of number of atoms from moles/molar masses 1. Avagadro
Exercise 3.5 - Naming Binary Covalent Compounds:
Chapter Exercise Key 1 Chapter Exercise Key Exercise.1 Classifying Compounds: Classify each of the following substances as either a molecular compound or an ionic compound. a. formaldehyde, CH 2 O (used
AP Chapter 1, 2, & 3: Atoms, Molecules, and Mass Relationships Name
AP Chapter 1, 2, & 3: Atoms, Molecules, and Mass Relationships Name Warm-Ups (Show your work for credit) Date 1. Date 2. Date 3. Date 4. Date 5. Date 6. Date 7. Date 8. AP Chapter 1, 2, & 3: Atoms & Molecules,
H 2 + O 2 H 2 O. - Note there is not enough hydrogen to react with oxygen - It is necessary to balance equation.
CEMICAL REACTIONS 1 ydrogen + Oxygen Water 2 + O 2 2 O reactants product(s) reactant substance before chemical change product substance after chemical change Conservation of Mass During a chemical reaction,
MEMORANDUM GRADE 11. PHYSICAL SCIENCES: CHEMISTRY Paper 2
MEMORANDUM GRADE 11 PHYSICAL SCIENCES: CHEMISTRY Paper 2 MARKS: 150 TIME: 3 hours Learning Outcomes and Assessment Standards LO1 LO2 LO3 AS 11.1.1: Plan and conduct a scientific investigation to collect
Chapter 3. Chemical Reactions and Reaction Stoichiometry. Lecture Presentation. James F. Kirby Quinnipiac University Hamden, CT
Lecture Presentation Chapter 3 Chemical Reactions and Reaction James F. Kirby Quinnipiac University Hamden, CT The study of the mass relationships in chemistry Based on the Law of Conservation of Mass
Balancing chemical reaction equations (stoichiometry)
Balancing chemical reaction equations (stoichiometry) This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit
1. Oxidation number is 0 for atoms in an element. 3. In compounds, alkalis have oxidation number +1; alkaline earths have oxidation number +2.
à xidation numbers In the Lewis model of bonding, when nonidentical atoms are bonded together, an important consideration is how the bonding electrons are apportioned between the atoms. There are two different
A mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together is called a(n)
Chemistry I ATOMIC BONDING PRACTICE QUIZ Mr. Scott Select the best answer. 1) A mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together is
Chem 1A Exam 2 Review Problems
Chem 1A Exam 2 Review Problems 1. At 0.967 atm, the height of mercury in a barometer is 0.735 m. If the mercury were replaced with water, what height of water (in meters) would be supported at this pressure?
What You Need To Know for the Chemistry Regents Exam
Name: What You Need To Know for the Chemistry Regents Exam The Test The Chemisty Regents Exam is broken down into three sections: Part A: 35 mulitple choice questions from all units covered over the course
1. Thermite reaction 2. Enthalpy of reaction, H 3. Heating/cooling curves and changes in state 4. More thermite thermodynamics
Chem 105 Fri 10-23-09 1. Thermite reaction 2. Enthalpy of reaction, H 3. Heating/cooling curves and changes in state 4. More thermite thermodynamics 10/23/2009 1 Please PICK UP your graded EXAM in front.
AP Chemistry A. Allan Chapter 8 Notes - Bonding: General Concepts
AP Chemistry A. Allan Chapter 8 Notes - Bonding: General Concepts 8.1 Types of Chemical Bonds A. Ionic Bonding 1. Electrons are transferred 2. Metals react with nonmetals 3. Ions paired have lower energy
EXAMPLE EXERCISE 4.1 Change of Physical State
EXAMPLE EXERCISE 4.1 Change of Physical State State the term that applies to each of the following changes of physical state: (a) Snow changes from a solid to a liquid. (b) Gasoline changes from a liquid
Chapter 13 - Solutions
Chapter 13 - Solutions 13-1 Types of Mixtures I. Solutions A. Soluble 1. Capable of being dissolved B. Solution 1. A homogeneous mixture of two or more substances in a single phase C. Solvent 1. The dissolving
Honors Chemistry: Unit 6 Test Stoichiometry PRACTICE TEST ANSWER KEY Page 1. A chemical equation. (C-4.4)
Honors Chemistry: Unit 6 Test Stoichiometry PRACTICE TEST ANSWER KEY Page 1 1. 2. 3. 4. 5. 6. Question What is a symbolic representation of a chemical reaction? What 3 things (values) is a mole of a chemical
The Synthesis of trans-dichlorobis(ethylenediamine)cobalt(iii) Chloride
CHEM 122L General Chemistry Laboratory Revision 2.0 The Synthesis of trans-dichlorobis(ethylenediamine)cobalt(iii) Chloride To learn about Coordination Compounds and Complex Ions. To learn about Isomerism.
Unit 5 Practice Test. Name: Class: Date: Multiple Choice Identify the choice that best completes the statement or answers the question.
Name: Class: Date: Unit 5 Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1) The internal energy of a system is always increased by. A) adding
CHEM 36 General Chemistry EXAM #1 February 13, 2002
CHEM 36 General Chemistry EXAM #1 February 13, 2002 Name: Serkey, Anne INSTRUCTIONS: Read through the entire exam before you begin. Answer all of the questions. For questions involving calculations, show
Chemical Formulas, Equations, and Reactions Test Pre-AP Write all answers on your answer document.
Name: Period: Chemical Formulas, Equations, and Reactions Test Pre-AP Write all answers on your answer document. 1. Which of the following is a NOT a physical property of hydrogen? A. It is gas C. It is
List the 3 main types of subatomic particles and indicate the mass and electrical charge of each.
Basic Chemistry Why do we study chemistry in a biology course? All living organisms are composed of chemicals. To understand life, we must understand the structure, function, and properties of the chemicals
Introductory Chemistry, 3 rd Edition Nivaldo Tro. Roy Kennedy Massachusetts Bay Community College Wellesley Hills, Maqqwertd ygoijpk[l
Introductory Chemistry, 3 rd Edition Nivaldo Tro Quantities in Car an octane and oxygen molecules and carbon dioxide and water Chemical Reactions Roy Kennedy Massachusetts Bay Community College Wellesley
Chemistry 151 Final Exam
Chemistry 151 Final Exam Name: SSN: Exam Rules & Guidelines Show your work. No credit will be given for an answer unless your work is shown. Indicate your answer with a box or a circle. All paperwork must
Enthalpy of Reaction and Calorimetry worksheet
Enthalpy of Reaction and Calorimetry worksheet 1. Calcium carbonate decomposes at high temperature to form carbon dioxide and calcium oxide, calculate the enthalpy of reaction. CaCO 3 CO 2 + CaO 2. Carbon
Chapter 7: Chemical Reactions
Chapter 7 Page 1 Chapter 7: Chemical Reactions A chemical reaction: a process in which at least one new substance is formed as the result of a chemical change. A + B C + D Reactants Products Evidence that
Chemical Calculations: The Mole Concept and Chemical Formulas. AW Atomic weight (mass of the atom of an element) was determined by relative weights.
1 Introduction to Chemistry Atomic Weights (Definitions) Chemical Calculations: The Mole Concept and Chemical Formulas AW Atomic weight (mass of the atom of an element) was determined by relative weights.
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
A PREVIEW & SUMMMARY of the 3 main types of bond:
Chemical Bonding Part 1 Covalent Bonding Types of Chemical Bonds Covalent Bonds Single Polar Double NonPolar Triple Ionic Bonds Metallic Bonds Other Bonds InterMolecular orces first A PREVIEW & SUMMMARY
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)
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