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1

A gas is placed in a sealed container. The gas has a pressure of one atmosphere and a temperature of 50 C. It is heated to 100 C. Which row describes the cause of the pressure of the gas and the effect of increasing the temperature of the gas?

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

6. Chemical reactions  →  6.2. Rate of reaction

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2

Four experiments, each containing a different acidic gas, are set up as shown...

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

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

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3

The Group I element potassium forms an ionic bond with the Group VII element fluorine. Which two ions are produced?

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

8. The Periodic Table  →  8.1. Arrangement of elements

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4

X and Y are atoms. ● X and Y have the same number of electron shells. ● X and Y have the same number of outer electrons. ● X and Y have different mass numbers. Which statements about X and Y are correct?

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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5

Lithium chloride is an ionic compound and silicon(oxide is a covalent compound. Which statement about both compounds is correct?

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

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

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6

Which equations are balanced?

9. Metals  →  9.6. Extraction of metals

9. Metals  →  9.4. Reactivity series

6. Chemical reactions  →  6.4. Redox

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7

Which row shows the formulae of sodium carbonate, zinc nitrate and ammonium sulfate?

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

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

3. Stoichiometry  →  3.1. Formulae

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8

Which statements about hydrogen and oxygen are correct?

4. Electrochemistry  →  4.2. Hydrogen–oxygen fuel cells

4. Electrochemistry  →  4.1. Electrolysis

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9

Graphite has a giant covalent structure. Which statements about graphite are correct?

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

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

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10

Which reaction pathway diagram represents an endothermic reaction?

5. Chemical energetics  →  5.1. Exothermic and endothermic reactions

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11

Hydrogen burns in oxygen. The equation for the reaction is shown...

5. Chemical energetics  →  5.1. Exothermic and endothermic reactions

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12

Which process involves a chemical change?

9. Metals  →  9.4. Reactivity series

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

6. Chemical reactions  →  6.1. Physical and chemical changes

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13

An experiment is carried out to find the rate of reaction between hydrochloric acid and zinc. Zn+ 2HCl  ZnCl 2+ H2The results of the experiment are shown...

6. Chemical reactions  →  6.2. Rate of reaction

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14

Hydrogen peroxide, H2O2, decomposes to form water and oxygen. 2H2O2 2H2O+ O2Manganese(oxide catalyses the decomposition reaction. The reaction is investigated in four experiments. experiment volume and concentration of hydrogen peroxide conditions 12.5 cm3 of 1.0 mol / dm3 25 C with manganese(oxide powder added 12.5 cm3 of 2.0 mol / dm3 40 C with manganese(oxide powder added 25 cm3 of 1.0 mol / dm3 40 C without manganese(oxide powder 25 cm3 of 1.0 mol / dm3 40 C with manganese(oxide powder added All reactions go to completion and all measurements of gas volumes are at room temperature and pressure. Which statement is correct?

6. Chemical reactions  →  6.2. Rate of reaction

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15

Sulfuric acid is produced by the Contact process. Which row shows the typical conditions used in the process?

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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16

Which equation shows the reduction of copper?

4. Electrochemistry  →  4.1. Electrolysis

6. Chemical reactions  →  6.4. Redox

9. Metals  →  9.4. Reactivity series

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17

Which statement about acids is correct?

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

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18

Copper(sulfate is formed by reacting excess solid copper(carbonate with dilute sulfuric acid. Which processes are part of the preparation of solid copper(sulfate?

4. Electrochemistry  →  4.1. Electrolysis

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

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19

Which type of reaction is represented by the equation shown...

6. Chemical reactions  →  6.4. Redox

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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20

Which compound is likely to be coloured?

6. Chemical reactions  →  6.4. Redox

12. Experimental techniques and chemical analysis  →  12.3. Chromatography

8. The Periodic Table  →  8.4. Transition elements

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21

Which statements about the metal zinc are correct?

9. Metals  →  9.6. Extraction of metals

9. Metals  →  9.3. Alloys and their properties

9. Metals  →  9.5. Corrosion of metals

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22

The electronic configurations of four elements, P, Q, R and S, are shown...

8. The Periodic Table  →  8.5. Noble gases

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

8. The Periodic Table  →  8.1. Arrangement of elements

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23

Which row compares the strength of alloys with pure metals and explains the difference in strength?

9. Metals  →  9.3. Alloys and their properties

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24

Zinc oxide reacts with carbon to produce zinc. Which equation represents this reaction?

3. Stoichiometry  →  3.1. Formulae

9. Metals  →  9.4. Reactivity series

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25

When a piece of aluminium foil is added to dilute hydrochloric acid, no effervescence is seen. Which statement explains why no effervescence is seen?

9. Metals  →  9.4. Reactivity series

9. Metals  →  9.6. Extraction of metals

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

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26

Iron nails are stored in an airtight container. lid air iron nails The nails begin to rust after a few days. How can the rusting of the nails be prevented?

9. Metals  →  9.5. Corrosion of metals

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27

Four substances present in the blast furnace during iron extraction are listed. calcium carbonate carbon dioxide carbon monoxide iron(oxide Which substances are both a reactant and a product during the reactions occurring in the blast furnace?

9. Metals  →  9.6. Extraction of metals

9. Metals  →  9.4. Reactivity series

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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28

Aluminium is extracted from purified bauxite by electrolysis. Which row shows the ionic half-equations for the reaction at each electrode?

4. Electrochemistry  →  4.1. Electrolysis

9. Metals  →  9.6. Extraction of metals

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29

Which test is used to show that a sample of water is pure?

10. Chemistry of the environment  →  10.1. Water

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

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30

Catalytic converters in car exhausts change polluting gases into non-polluting gases. Which statements about oxides of nitrogen and car engines are correct?

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

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31

The structures of two molecules, X and Y, are shown...

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

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32

What is the structure of butanoic acid?

11. Organic chemistry  →  11.8. Polymers

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

11. Organic chemistry  →  11.7. Carboxylic acids

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33

When a mixture of methane and chlorine is exposed to ultraviolet light, a reaction takes place. Which statements about this reaction are correct?

11. Organic chemistry  →  11.4. Alkanes

6. Chemical reactions  →  6.2. Rate of reaction

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

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34

Esters are formed when a carboxylic acid reacts with an alcohol. What is the catalyst for this reaction?

11. Organic chemistry  →  11.7. Carboxylic acids

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35

The diagram shows part of a polymer. H H C H H C H H C H H C H H C H H C H H C H H C Which diagram shows the monomer from which this polymer is made?

11. Organic chemistry  →  11.8. Polymers

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36

Nylon and PET are polymers. Which statements about these polymers are correct?

11. Organic chemistry  →  11.8. Polymers

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37

Ethane is used as a fuel. Which equation shows the complete combustion of ethane?

11. Organic chemistry  →  11.6. Alcohols

11. Organic chemistry  →  11.2. Naming organic compounds

11. Organic chemistry  →  11.4. Alkanes

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38

The painkiller paracetamol is synthesised from 4-aminophenol. Chromatography is done on an impure sample of paracetamol. The results are shown...

12. Experimental techniques and chemical analysis  →  12.3. Chromatography

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

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39

The equation for the reaction of aqueous calcium nitrate and aqueous sodium hydroxide is shown...

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

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

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40

The results of two tests on aqueous compound X are given. test result warm with aluminium foil and aqueous sodium hydroxide ammonia is produced aqueous sodium hydroxide brown precipitate What is X?

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

10. Chemistry of the environment  →  10.1. Water

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