SECTION 1 — 25 marks

Questions 1 and 2 refer to an experiment to investigate the rate of a reaction.
The volume of gas collected in 2 minutes was 5 cm3

1. What was the average rate of reaction over this time?

  • A 0·2
  • B 0·4
  • C 2·5
  • D 5·0

Ans C

2. The unit for the average rate of this reaction is

  • A cm3/min−1
  • B cm3 min−1
  • C min/cm3
  • D min cm−3

Ans B 

3. Tennessine is a newly discovered element with a predicted electron arrangement of
2,8,18,32,32,18,7.In which group of the periodic table should Tennessine be placed?

  • A 1
  • B 2
  • C 7
  • D 8

Ans C

4. Which of the following is a positively charged ion?

Protons           Neutrons          Electrons

  • A     9                          10                                10
  • B    10                          9                                  10
  • C    11                          12                                  11
  • D    12                         13                                  10

Ans D

5. To turn a gas into a liquid it must be cooled below a temperature known as its critical

Identify the true statement based on the information in this table.

  • A Carbon dioxide can be a liquid at 40 °C
  • B Compounds have higher critical temperatures than elements
  • C Critical temperature increases as relative formula mass increases
  • D Diatomic elements have lower critical temperatures than Noble gases

Ans B

6. A molecule of phosphorus trifluoride is shown.

Which term can be used to describe the shape of a phosphorus trifluoride molecule?

  • A Linear
  • B Angular
  • C Tetrahedral
  • D Trigonal pyramidal

Ans D

7. In which of the following compounds do the ions have the same electron arrangement?
You may wish to use the data booklet to help you.

  • A Na2O
  • B LiF
  • C KBr
  • D MgCl2

Ans A

8. Several conductivity experiments were carried out using the apparatus below.

Identify the experiment in which the bulb would light.
                          Substance X                       Substance Y

  • A        solid copper sulfate                           liquid mercury
  • B           copper chloride solution            molten sodium chloride
  • C               solid potassium nitrate             nickel bromide solution
  • D              sodium chloride solution            liquid hexane

Ans B

9. Limewater can be made by dissolving calcium hydroxide in water.
Which of the following terms correctly describes calcium hydroxide?

  • A Solute
  • B Solvent
  • C Solution
  • D Insoluble

Ans A

10. Ammonium nitrate, NH4NO3, has a gram formula mass of 80.
The percentage by mass of nitrogen in ammonium nitrate is equal to

  • A × 100
  • B × 100
  • C × 80
  • D × 100.

Ans B

11. As an alkaline solution is diluted with water

  • A the pH increases
  • B the pH stays the same
  • C the concentration of hydroxide ions increases
  • D the concentration of hydroxide ions decreases.

Ans D

12. Which of the following compounds is a base?

  • A Sodium oxide
  • B Calcium chloride
  • C Potassium nitrate
  • D Ammonium sulfate

Ans A

13. Which of the following compounds does not have an isomer?

  • A Cyclopropane
  • B But-1-ene
  • C Pentane
  • D Ethene

Ans D

14. The systematic name for CH3CH2C(CH3)CHCH3 is

  • A 3-methylpentane
  • B 2-methylpentane
  • C 3-methylpent-2-ene
  • D 2-methylpent-3-ene.

Ans C

15. When pent-1-ene undergoes an addition reaction with water, two products are formed.

Which of the following alkenes will also produce two products when it undergoes an addition
reaction with water?

  • A Oct-2-ene
  • B Hex-3-ene
  • C But-2-ene
  • D Ethene

Ans A

16. In the Clemmensen reaction, ketones can be converted to alkanes as shown.

Identify the alkane produced if the following ketone was used in this reaction?

Ans B

17. Which line in the table correctly describes the trends going from hexanoic acid to butanoic
                  Formula mass                   Solubility in water

  • A           increasing                           decreasing
  • B           decreasing                    increasing
  • C            decreasing                            decreasing
  • D             increasing                             increasing

Ans B

18. Four cells were made by joining silver to different metals.
The cells produced the following voltages 2·7 V, 1·1 V, 0·9 V and 0·5 V.

The metals used were copper, zinc, iron and magnesium.
Which voltage was produced in the cell containing silver and copper?
You may wish to use the data booklet to help you.

  • A 2·7 V
  • B 1·1 V
  • C 0·9 V
  • D 0·5 V

Ans D

19. Information about the reactions of three different metals, X, Y and Z is given in the table.

Which of the following shows the metals in order of increasing reactivity?

  • A Y, Z, X
  • B Z, X, Y
  • C Y, X, Z
  • D X, Y, Z

Ans C

20. A co-polymer is formed when two different monomers polymerise.
Part of the structure of a co-polymer, showing three monomer units, is given below.

One of the monomers used is propene.Identify the other monomer.

  • A Pent-2-ene
  • B Pent-1-ene
  • C But-2-ene
  • D But-1-ene

Ans C

21. Nitrogen dioxide is a brown coloured gas that is soluble in water and more dense than air.
Which of the following diagrams shows the most appropriate method for collecting and
measuring the volume of nitrogen dioxide?

Ans C

22. A solution of a metal chloride burns with a green flame.
Which of the following metal ions could be present in the metal chloride?
You may wish to use the data booklet to help you.

  • A Ba2+
  • B Ca2+
  • C K+
  • D Na+

Ans A

23. Identify the gas that turns limewater cloudy.

  • A Oxygen
  • B Nitrogen
  • C Hydrogen
  • D Carbon dioxide

Ans D

Questions 24 and 25 refer to the equation shown.
AgNO3(aq) + NaBr(aq) ↓ NaNO3(aq) + AgBr(s)

24. The reaction shown by the equation is an example of

  • A addition
  • B combustion
  • C precipitation
  • D neutralisation.

Ans C

25. Which of the following ions are spectator ions in the reaction?

  • A Ag+and NO3−
  • B Na+and NO3−
  • C Ag+and Br−
  • D Na+and Br−

Ans B

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