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Question 1 of 40
1. Question
Which gas has the fastest rate of diffusion?
CorrectIncorrect -
Question 2 of 40
2. Question
In which state does 1 dm3 of methane contain the most particles?
CorrectIncorrect -
Question 3 of 40
3. Question
Which statement explains why isotopes of the same element have the same chemical properties?
CorrectIncorrect -
Question 4 of 40
4. Question
The electronic structures of atoms P and Q are shown.
P and Q form an ionic compound.
What is the formula of the compound?CorrectIncorrect -
Question 5 of 40
5. Question
Fermentation of sugar produces a mixture of ethanol solution and solid yeast.
How is the solid yeast removed from the mixture?CorrectIncorrect -
Question 6 of 40
6. Question
Which row explains why copper is a good conductor of electricity at room temperature?
 copper ions
move freelyelectrons
move freelyA no no B no yes C yes no D yes yes CorrectIncorrect -
Question 7 of 40
7. Question
Which pair of statements about diamond and graphite is correct?
CorrectIncorrect -
Question 8 of 40
8. Question
Sodium nitride contains the nitride ion, N3–.
Sodium nitride is unstable and decomposes into its elements.
What is the equation for the decomposition of sodium nitride?CorrectIncorrect -
Question 9 of 40
9. Question
Compound X contains carbon, hydrogen and oxygen only.
By mass, it contains 26.7% carbon and 2.2% hydrogen.
What is the empirical formula of X?CorrectIncorrect -
Question 10 of 40
10. Question
Caesium fluoride is an ionic compound.
Which statements about caesium fluoride are correct?- It conducts electricity when solid.
- It has a high melting point.
- It is soluble in water.
- It is highly volatile.
CorrectIncorrect -
Question 11 of 40
11. Question
Which diagram shows the direction of movement of ions and electrons during the electrolysis of molten sodium chloride?
CorrectIncorrect -
Question 12 of 40
12. Question
Calcium carbonate, CaCO3, reacts with dilute hydrochloric acid to produce carbon dioxide.
The equation for the reaction is shown. The relative formula mass of calcium carbonate is 100.
CaCO3 + 2HCl → CaCl2 + H2O + CO2
10 g of calcium carbonate is reacted with an excess of dilute hydrochloric acid.
Which mass of carbon dioxide is produced?CorrectIncorrect -
Question 13 of 40
13. Question
Molten sodium chloride and concentrated aqueous sodium chloride are electrolysed using platinum electrodes.
What are the products at the negative electrode (cathode) in each electrolysis? molten
sodium chlorideconcentrated aqueous
sodium chlorideA hydrogen hydrogen B hydrogen sodium C sodium hydrogen D sodium sodium CorrectIncorrect -
Question 14 of 40
14. Question
An object is electroplated with silver using an aqueous silver salt as the electrolyte.
Which row is correct? the object to be
electroplated is thethe other electrode
is made fromA anode carbon B anode silver C cathode carbon D cathode silver CorrectIncorrect -
Question 15 of 40
15. Question
Which row describes the changes that occur in an endothermic reaction?
energy change temperature A energy given out to
the surroundingsdecreases B energy given out to
the surroundingsincreases C energy taken in from
the surroundingsdecreases D energy taken in from
the surroundingsincreases CorrectIncorrect -
Question 16 of 40
16. Question
Which statement about fuels is correct?
CorrectIncorrect -
Question 17 of 40
17. Question
Which statement about endothermic and exothermic reactions is correct?
CorrectIncorrect -
Question 18 of 40
18. Question
The reaction used to manufacture ammonia from nitrogen and hydrogen is reversible.
An equilibrium is established between ammonia, nitrogen and hydrogen.
Which statement describes the equilibrium?CorrectIncorrect -
Question 19 of 40
19. Question
How does increasing the concentration affect the reacting particles in a chemical reaction?
increases the
collision rateincreases the proportion
of particles with the
activation energyA ✔ ✘ B ✔ ✔ C ✘ ✘ D ✘ ✔ CorrectIncorrect -
Question 20 of 40
20. Question
Methyl orange is added to dilute hydrochloric acid and to aqueous sodium hydroxide.
What is the colour of the methyl orange in each solution? colour in dilute
hydrochloric acidcolour in aqueous
sodium hydroxideA orange red B red yellow C red orange D yellow red CorrectIncorrect -
Question 21 of 40
21. Question
Zinc oxide is an amphoteric oxide.
Which types of substances will react with zinc oxide?CorrectIncorrect -
Question 22 of 40
22. Question
Information about some silver compounds is shown.
compound formula solubility in water silver carbonate Ag2CO3 insoluble silver chloride AgCl insoluble silver nitrate AgNO3 soluble silver oxide Ag2O insoluble Which equation shows a reaction which cannot be used to make a silver salt?
CorrectIncorrect -
Question 23 of 40
23. Question
Aqueous ethanoic acid is a weak acid.
Aqueous sodium hydroxide is a strong base.
Aqueous ethanoic acid is neutralised by aqueous sodium hydroxide.
Which statements are correct?- Aqueous ethanoic acid accepts protons from hydroxide ions.
- The aqueous ethanoic acid used is fully dissociated into ions.
- The aqueous sodium hydroxide used is fully dissociated into ions.
- The reaction produces a salt and water.
CorrectIncorrect -
Question 24 of 40
24. Question
Three properties of element X are listed.
- It contains atoms with a full outer shell of electrons.
- It is monoatomic.
- It is unreactive.
In which part of the Periodic Table is the element placed?
CorrectIncorrect -
Question 25 of 40
25. Question
Which word equation represents a reaction that occurs?
CorrectIncorrect -
Question 26 of 40
26. Question
Which statement about the extraction of aluminium is correct?
CorrectIncorrect -
Question 27 of 40
27. Question
Metal M is mixed with copper to produce brass.
What is M?CorrectIncorrect -
Question 28 of 40
28. Question
The table gives some properties of an element.
melting point in ∘C 3422 appearance of the element grey appearance of the chloride of the element dark blue density in g / cm3 19.2 electrical conductivity when solid good Which other property does this element have?
CorrectIncorrect -
Question 29 of 40
29. Question
Ammonia is produced using the Haber process.
Which row shows the source of the raw materials and the reaction conditions? source of
nitrogensource of
hydrogentemperature
    /∘Cpressure
  /atmA air hydrocarbons 200 200 B hydrocarbons air 450 2 C air hydrocarbons 450 200 D air hydrocarbons 450 2 CorrectIncorrect -
Question 30 of 40
30. Question
How many species are acting as bases in this reversible reaction?
HNO3 + H2O ⇋ H3O+ + NO3–CorrectIncorrect -
Question 31 of 40
31. Question
The equation for a reaction occurring in the Contact process is shown.
2SO2 + O2 → 2SO3
What is the catalyst used in this reaction?CorrectIncorrect -
Question 32 of 40
32. Question
Which information about carbon dioxide and methane is correct?
  carbon dioxide methane A formed when vegetation decomposes ✔ ✘ B greenhouse gas ✔ ✔ C present in unpolluted air ✘ ✘ D produced during respiration ✘ ✔ key
✔ = correct
✘ = not correctCorrectIncorrect -
Question 33 of 40
33. Question
The structure of an ester is shown.
What are the names of the carboxylic acid and the alcohol that react together to form this ester?carboxylic acid alcohol A ethanoic acid ethanol B ethanoic acid propan-1-ol C propanoic acid ethanol D propanoic acid propan-1-ol CorrectIncorrect -
Question 34 of 40
34. Question
Which statements about lime are correct?
- Lime is made by heating calcium carbonate (limestone).
- Lime is used to desulfurise flue gases.
- Lime is used to treat alkaline soil.
- The chemical name for lime is calcium oxide.
CorrectIncorrect -
Question 35 of 40
35. Question
Which structure is correctly named?
CorrectIncorrect -
Question 36 of 40
36. Question
The structure of part of a polymer is shown.
Which monomers can be used to make this polymer?CorrectIncorrect -
Question 37 of 40
37. Question
Carboxylic acids are made by the oxidation of alcohols.
Which carboxylic acid is produced from CH3CH2OH?CorrectIncorrect -
Question 38 of 40
38. Question
Propene, C3H6, reacts with bromine, Br2, in an addition reaction.
Which structure represents the product of this reaction?
CorrectIncorrect -
Question 39 of 40
39. Question
Which statements about ethanol are correct?
- Ethanol is used as a solvent.
- Ethanol can be made directly from ethane.
- Ethanol is a covalent compound.
CorrectIncorrect -
Question 40 of 40
40. Question
Which diagram represents the structure of nylon?
CorrectIncorrect