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1

The diagram shows the arrangement of particles in the three states of matter. P Q R Solid carbon dioxide (dry ice) sublimes to gaseous carbon dioxide. Which row describes the initial and final states?

1. States of matter  →  1.1. Solids, liquids and gases

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2

During an experiment a measurement is recorded in cm3. Which apparatus is used?

12. Experimental techniques and chemical analysis  →  12.1. Experimental design

12. Experimental techniques and chemical analysis  →  12.2. Acid-base titrations

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3

A student carried out paper chromatography on a mixture of amino acids. The student sprayed the dried chromatogram with a locating agent. What is the function of the locating agent?

12. Experimental techniques and chemical analysis  →  12.3. Chromatography

7. Acids, bases and salts  →  7.1. The characteristic properties of acids and bases

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4

Which row describes silicon(oxide?

2. Atoms, elements and compounds  →  2.6. Giant covalent structures

2. Atoms, elements and compounds  →  2.4. Ions and ionic bonds

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5

Why do isotopes of the same element have the same chemical properties?

2. Atoms, elements and compounds  →  2.3. Isotopes

8. The Periodic Table  →  8.1. Arrangement of elements

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6

Which dot-and-cross diagram shows the outer shell electron arrangement in a molecule of carbon dioxide?

2. Atoms, elements and compounds  →  2.5. Simple molecules and covalent bonds

2. Atoms, elements and compounds  →  2.2. Atomic structure and the Periodic Table

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7

The equation for the reaction between phosphorus and oxygen is shown...

10. Chemistry of the environment  →  10.3. Air quality and climate

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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8

The relative molecular mass of an alcohol is 88. Its percentage composition by mass is: C, 54.5%; H, 9.1%; O, 36.4%. Which row shows the empirical formula and molecular formula for this alcohol?

3. Stoichiometry  →  3.3. The mole and the Avogadro constant

3. Stoichiometry  →  3.1. Formulae

3. Stoichiometry  →  3.2. Relative masses of atoms and molecules

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9

Which statements about the electrolysis of concentrated copper(chloride are correct?

4. Electrochemistry  →  4.1. Electrolysis

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10

Which metal combination produces the highest voltage reading in the cells shown...

12. Experimental techniques and chemical analysis  →  12.5. Identification of ions and gases

9. Metals  →  9.2. Uses of metals

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11

The equation for the combustion of methane is shown...

5. Chemical energetics  →  5.1. Exothermic and endothermic reactions

11. Organic chemistry  →  11.6. Alcohols

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12

Which statement describes an exothermic reaction?

5. Chemical energetics  →  5.1. Exothermic and endothermic reactions

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13

The mass of a beaker and its contents is plotted against time. Which graph represents what happens when sodium carbonate reacts with an excess of dilute hydrochloric acid in an open beaker?

6. Chemical reactions  →  6.2. Rate of reaction

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14

Copper metal donates electrons to silver ions. Zinc metal donates electrons to copper ions. What is the strongest reducing agent?

9. Metals  →  9.4. Reactivity series

6. Chemical reactions  →  6.4. Redox

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15

Four statements about the effect of increasing temperature on a reaction are shown...

6. Chemical reactions  →  6.2. Rate of reaction

5. Chemical energetics  →  5.1. Exothermic and endothermic reactions

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16

The formation of sulfur trioxide from sulfur dioxide is a reversible reaction. 2SO2+ O22SO3The forward reaction is exothermic. Which changes would increase the equilibrium yield of SO3?

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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17

Some properties of four oxides are listed. Oxide 1 reacts with both acids and alkalis to form salts. Oxide 2 reacts with acids to form salts but does not react with alkalis. Oxide 3 reacts with alkalis to form salts but does not react with acids. Oxide 4 does not react with acids or alkalis. Which row describes the oxides?

7. Acids, bases and salts  →  7.2. Oxides

7. Acids, bases and salts  →  7.1. The characteristic properties of acids and bases

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18

What is not a typical characteristic of acids?

7. Acids, bases and salts  →  7.1. The characteristic properties of acids and bases

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19

Copper(sulfate can be prepared by adding excess copper(carbonate to sulfuric acid. Why is an excess of copper(carbonate added?

4. Electrochemistry  →  4.1. Electrolysis

9. Metals  →  9.4. Reactivity series

7. Acids, bases and salts  →  7.3. Preparation of salts

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20

Compound P reacts with hydrochloric acid to produce a gas that turns limewater milky. What is P?

9. Metals  →  9.4. Reactivity series

12. Experimental techniques and chemical analysis  →  12.5. Identification of ions and gases

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21

Which statement about nitrogen and phosphorus is not correct?

8. The Periodic Table  →  8.1. Arrangement of elements

2. Atoms, elements and compounds  →  2.3. Isotopes

2. Atoms, elements and compounds  →  2.2. Atomic structure and the Periodic Table

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22

Sodium and rubidium are elements in Group I of the Periodic Table. Which statement is correct?

8. The Periodic Table  →  8.1. Arrangement of elements

8. The Periodic Table  →  8.2. Group I properties

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23

Which properties do the elements chromium, iron and vanadium have in common?

9. Metals  →  9.1. Properties of metals

8. The Periodic Table  →  8.1. Arrangement of elements

8. The Periodic Table  →  8.4. Transition elements

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24

Why is argon gas used to fill electric lamps?

10. Chemistry of the environment  →  10.1. Water

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25

What is a property of all metals?

9. Metals  →  9.1. Properties of metals

9. Metals  →  9.3. Alloys and their properties

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26

Aluminium is extracted from bauxite by electrolysis. Which row shows the anode material and the anode reaction?

9. Metals  →  9.6. Extraction of metals

4. Electrochemistry  →  4.1. Electrolysis

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27

Which statement about the metal zinc is not correct?

9. Metals  →  9.3. Alloys and their properties

9. Metals  →  9.5. Corrosion of metals

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28

Calcium nitrate decomposes when it is heated. What is the equation for the thermal decomposition of calcium nitrate?

12. Experimental techniques and chemical analysis  →  12.5. Identification of ions and gases

10. Chemistry of the environment  →  10.3. Air quality and climate

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29

The flow chart shows stages in the treatment of river water to produce drinking water. drinking water stage Y stage X settling tank river water What occurs at stages X and Y?

10. Chemistry of the environment  →  10.1. Water

12. Experimental techniques and chemical analysis  →  12.4. Separation and purification

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30

An experiment to investigate the effect of galvanising iron is shown...

9. Metals  →  9.5. Corrosion of metals

9. Metals  →  9.6. Extraction of metals

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31

Which metal is used as a catalyst in the Haber process for the manufacture of ammonia?

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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32

Which process removes carbon dioxide from the atmosphere?

10. Chemistry of the environment  →  10.3. Air quality and climate

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33

Which row shows the conditions used in the manufacture of sulfuric acid by the Contact process?

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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34

Some marble chips (calcium carbonate) are heated strongly and substances X and Y are formed. Substance X is a white solid that reacts with water, giving out heat. Substance Y is a colourless gas. What are substances X and Y?

7. Acids, bases and salts  →  7.3. Preparation of salts

12. Experimental techniques and chemical analysis  →  12.5. Identification of ions and gases

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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35

The structures of four organic compounds are shown...

11. Organic chemistry  →  11.2. Naming organic compounds

11. Organic chemistry  →  11.1. Formulae, functional groups and terminology

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36

Which statement is not correct?

11. Organic chemistry  →  11.3. Fuels

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37

X, Y and Z are three hydrocarbons. X CH2=CH2 Y CH3–CH=CH2 Z CH3–CH2–CH=CH2 What do compounds X, Y and Z have in common?

11. Organic chemistry  →  11.1. Formulae, functional groups and terminology

11. Organic chemistry  →  11.3. Fuels

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38

The diagram shows a reaction sequence. butane ethene ethanol carbon dioxide and water X Y Z Which row names the processes X, Y and Z?

11. Organic chemistry  →  11.6. Alcohols

11. Organic chemistry  →  11.2. Naming organic compounds

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39

The structure of an ester is shown...

11. Organic chemistry  →  11.7. Carboxylic acids

11. Organic chemistry  →  11.2. Naming organic compounds

11. Organic chemistry  →  11.6. Alcohols

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40

A polymer can be made from methyl propene. C C H H CH3 CH3 Which diagram shows the structure of the polymer?

11. Organic chemistry  →  11.8. Polymers

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