Quiz about Chemistry Review

Question 1

A bottle of liquid perfume is left open at the front of a room.

After some time, the perfume can be smelled at the back of the room.

What two physical processes are taking place?

Accepted Answer

evaporation

Accepted Answer

diffusion

Answer

condensation

Answer

dissolution

Answer

precipitation

Question 2

The table shows some properties of the Group 0 elements helium, neon, argon and krypton.

Which element in the table has the highest melting point?

Accepted Answer

krypton

Answer

helium

Answer

neon

Answer

argon

Question 3

The structure of ethanoic acid is shown.

Which diagram shows the arrangement of outer shell electrons in a molecule of ethanoic acid?

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 4

In which row are the substances correctly classified?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 5

Which of these substance structures is an element?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 6

Which apparatus could be used to electroplate an iron nail with copper?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 7

Electricity is passed separately through concentrated hydrochloric acid, concentrated aqueous sodium chloride and dilute sulfuric acid.

In which rows are the electrolysis products correctly named?

Accepted Answer

1, 2 and 3

Answer

1 and 2 only

Answer

1 and 3 only

Answer

2 and 3 only

Question 8

When substance X is electrolysed, the amount of gases P and Q formed is shown.

What is substance X?

Accepted Answer

dilute sulfuric acid

Answer

concentrated aqueous sodium chloride

Answer

concentrated hydrochloric acid

Answer

molten lead

(II)

bromide

Question 9

The diagram shows an electrical cable.

Which statement about the substances used is correct?

Accepted Answer

The core is copper because it conducts electricity well.

Answer

The coating is plastic because it conducts electricity well.

Answer

The core is copper because it is cheap and strong.

Answer

The core is iron because it is cheap and strong.

Question 10

The diagram shows, in cross-section, the arrangement of aluminium and steel wires in an electric power cable.

Which metal wire is the better conductor and which metal wire has the greater mechanical strength?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 11

Household waste can be burned to produce energy.

Which one of the following words best describes the energy change when a substance is burned?

Accepted Answer

exothermic

Answer

endothermic

Answer

neutralisation

Answer

reduction

Question 12

Household waste can be burned to produce energy.

The table shows the energy released by different materials when the waste is burned.

Which material releases the most energy per kilogram when burned?

Accepted Answer

plastics

Answer

metals

Answer

organic matter

Answer

paper

Answer

cloth

Question 13

A student measured the highest temperature reached when four different fuels were burned. He used the apparatus shown in the diagram.

The table shows the results.

Which fuel gave the highest temperature change?

Accepted Answer

hexane

Answer

ethanol

Answer

pentane

Answer

propanol

Question 14

A student measures the maximum temperature changes when five different solids, P, Q, R, S and T, are dissolved separately in water. She uses the apparatus shown in the diagram.

The table of results is also shown. Which solid gave the greatest temperature change when dissolved in water?

Accepted Answer

T

Answer

P

Answer

Q

Answer

R

Answer

S

Question 15

Which statement about catalysts in chemical reactions is NOT correct?

Accepted Answer

Catalysts increase the energy of the reacting particles.

Answer

Catalysts are not used up in the reaction.

Answer

Catalysts increase the rate of the reaction.

Answer

Catalysts lower the activation energy.

Question 16

A solution containing substance X was tested. The table shows the results.

What is X?

Accepted Answer

potassium iodide

Answer

lithium bromide

Answer

lithium iodide

Answer

potassium bromide

Question 17

Four different solutions, W, X, Y and Z, are tested with universal indicator.

Which solutions are acidic?

Accepted Answer

X and Z

Answer

W and Z

Answer

X only

Answer

Y only

Question 18

In the Periodic Table, how does the metallic character of the elements vary from left to right across a period?

Accepted Answer

It decreases.

Answer

It increases.

Answer

It increases then decreases.

Answer

It stays the same.

Question 19

Which of the following elements is unreactive?

Accepted Answer

Argon

2, 8, 8

Answer

Oxygen2, 6

Answer

Lithium

2, 1

Answer

Aluminum

2, 8, 3

Question 20

The following substances can be formed when petrol is burnt in a car engine.

Which substance is the main cause of acid rain?

Accepted Answer

nitrogen dioxide

Answer

carbon

Answer

carbon monoxide

Answer

water

Question 21

What is the percentage by volume of oxygen in the air?

Accepted Answer

About 21%

Answer

About 1%

Answer

About 99%

Answer

About 49%

Question 22

Which term below refers to the breaking up of larger molecules into smaller ones by the action of heat?

Accepted Answer

thermal decomposition

Answer

neutralisation

Answer

electrolysis

Answer

exothermal reaction

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