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1

Which statement is not correct?

11. Organic chemistry  →  11.3. Fuels

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2

A radioactive isotope of carbon has more nucleons than the non-radioactive isotope, C . How many protons, neutrons and electrons could there be in this radioactive isotope of carbon?

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

2. Atoms, elements and compounds  →  2.3. Isotopes

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3

Ethylamine gas, C2H5NH2, and hydrogen chloride gas, HCl, react together to form a white solid, ethylamine hydrochloride. At which position in the tube would a ring of solid white ethylamine hydrochloride form?

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

9. Metals  →  9.4. Reactivity series

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4

The scheme shows a sequence of reactions starting from compound Y. compound Y excess HNO3+ gas colourless solution white precipitate insoluble in excess NaOHNaOHWhat could the compound Y be?

9. Metals  →  9.4. Reactivity series

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

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5

Which electronic configurations represent three metallic elements in the same period of the Periodic Table?

8. The Periodic Table  →  8.1. Arrangement of elements

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

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6

Which molecule has the largest number of electrons involved in covalent bonds?

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

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

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7

Graphite is often used as the electrodes in the electrolysis of solutions. graphite electrode electrolyte graphite electrode battery Which particles are involved in the conduction of electricity by graphite?

4. Electrochemistry  →  4.1. Electrolysis

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8

Element X has a lattice of positive ions and a ‘sea of electrons’. e– e– e– e– e– e– e– e– e– e– e– e– e– e– e– Which property will X have?

2. Atoms, elements and compounds  →  2.7. Metallic bonding

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

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9

An element, E, forms a hydride, E H4, which contains 90.0% by mass of E. If the relative atomic mass of hydrogen is 1, what is the relative atomic mass of E?

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

2. Atoms, elements and compounds  →  2.3. Isotopes

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10

A piece of chalk has a mass of 23.0 g. Chalk is impure calcium carbonate. When analysed, the chalk is found to contain 0.226 moles of pure calcium carbonate. [Mr : CaCO3 , 100] What is the percentage purity of the piece of chalk?

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

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

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11

Aqueous potassium iodide, KI, can be used as a test reagent in redox reactions. Iodide ions are readily ……X…… . A positive result for the test is when the solution changes colour from ……Y…… to ……Z…… . Which words correctly complete gaps X, Y and Z?

6. Chemical reactions  →  6.4. Redox

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12

Which element is most likely to be used as an industrial catalyst?

11. Organic chemistry  →  11.5. Alkenes

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

8. The Periodic Table  →  8.4. Transition elements

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13

Which solution containing one mole per dm3 of the compound would have the lowest pH?

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

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14

Which statement about oxides is correct?

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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15

Bitumen, diesel, naphtha and paraffin are all fractions obtained by the fractional distillation of petroleum. Which row gives a correct use for the named fraction?

11. Organic chemistry  →  11.3. Fuels

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16

In which circuit does the bulb light?

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

4. Electrochemistry  →  4.1. Electrolysis

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17

An element is in Period 3 and Group VII of the Periodic Table. Which statement about this element is correct?

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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18

The table contains information about the physical properties of the elements chlorine, copper and iron. element melting point / °C boiling point / °C chlorine –101 W copper X iron Y In the table above, what are the correct values of W, X and Y?

9. Metals  →  9.1. Properties of metals

10. Chemistry of the environment  →  10.1. Water

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19

Petroleum is separated into fractions by fractional distillation. Which fraction distils off at the highest temperature?

11. Organic chemistry  →  11.3. Fuels

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20

Ammonia is made by a reversible reaction between nitrogen and hydrogen. N2+ 3H22NH3∆H = –92 kJ / mol What is the effect of increasing the pressure in this process?

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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21

Aqueous copper(sulfate is electrolysed using copper electrodes. The current is constant and the anode (positive electrode) is weighed at regular intervals. Which graph is obtained when the mass of the anode is plotted against time?

4. Electrochemistry  →  4.1. Electrolysis

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22

In the extraction of aluminium by electrolysis, its oxide is dissolved in molten cryolite. Cryolite is a sodium salt. Aluminium is deposited at the ……1…… and it can be deduced that aluminium is ……2…… sodium in the reactivity series. Which words correctly complete gaps 1 and 2?

9. Metals  →  9.4. Reactivity series

9. Metals  →  9.6. Extraction of metals

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23

Which substance is not a raw material used in the manufacture of sulfuric acid?

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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24

A student mixed together aqueous solutions of Y and Z. A white precipitate formed. Which could not be Y and Z?

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

9. Metals  →  9.4. Reactivity series

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

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25

Which property would all the hydrogen compounds of the Group VII elements possess?

8. The Periodic Table  →  8.3. Group VII properties

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26

Which particle is found in iodine vapour?

8. The Periodic Table  →  8.3. Group VII properties

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

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27

What suggests that metal M is not in Group I of the Periodic Table?

8. The Periodic Table  →  8.2. Group I properties

8. The Periodic Table  →  8.1. Arrangement of elements

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28

The diagram shows an outline of part of the Periodic Table. W X Y Z Which statements are correct?

8. The Periodic Table  →  8.4. Transition elements

8. The Periodic Table  →  8.1. Arrangement of elements

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29

Which of these processes can be used to purify water containing insoluble impurities?

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

10. Chemistry of the environment  →  10.1. Water

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30

Which metal can react rapidly with steam but reacts only very slowly with cold water?

9. Metals  →  9.4. Reactivity series

9. Metals  →  9.1. Properties of metals

6. Chemical reactions  →  6.3. Reversible reactions and equilibrium

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31

A hydride is a compound containing only two elements, one of which is hydrogen. Which element can form the greatest number of different hydrides?

11. Organic chemistry  →  11.3. Fuels

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

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32

What is not essential for photosynthesis?

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

10. Chemistry of the environment  →  10.1. Water

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33

A liquid reacts with each of sodium carbonate, potassium hydroxide and ethanol. What is the liquid?

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

11. Organic chemistry  →  11.7. Carboxylic acids

11. Organic chemistry  →  11.6. Alcohols

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34

Which compound, on combustion, never forms carbon?

11. Organic chemistry  →  11.6. Alcohols

11. Organic chemistry  →  11.3. Fuels

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35

Which of the following is not a condensation polymer?

11. Organic chemistry  →  11.8. Polymers

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36

Which statement about the properties of propane and hexane is correct?

11. Organic chemistry  →  11.3. Fuels

11. Organic chemistry  →  11.4. Alkanes

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37

When a volcano erupts, which gas is produced in significant amounts?

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

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38

Four compounds are shown...

3. Stoichiometry  →  3.1. Formulae

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

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39

Fats, carbohydrates and proteins all contain which chemical elements?

11. Organic chemistry  →  11.3. Fuels

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

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40

The structural formulae of some organic compounds are shown...

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

11. Organic chemistry  →  11.2. Naming organic compounds

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