IGCSE Coordinated Chemistry Workout 35

Which type of reaction and which temperature change take place when an acid reacts with an alkali?

• A

• B

• C

• D

Dilute hydrochloric acid reacts with solid calcium carbonate. Which change decreases the speed of the reaction?

• Decrease the concentration of the hydrochloric acid.

• Decrease the size of the calcium carbonate particles.

• Increase the surface area of the calcium carbonate.

• Increase the temperature of the acid.

Which row describes metallic oxides and non-metallic oxides?

• A

• B

• C

• D

In which experiment does limewater become milky?

• A

• B

• C

• D

Which statement about the Periodic Table is correct?

• Elements are listed in order of neutron number.

• Elements are listed in order of nucleon number.

• Elements are listed in order of proton number.

• Elements are listed in order of relative atomic mass.

Which statement about lithium, sodium and potassium is not correct?

• They are in the same group of the Periodic Table.

• They are in the same period of the Periodic Table.

• They float on water.

• They react with water to give a flammable gas.

Some properties of aluminium are listed.

1 It conducts heat.

2 It has a low density.

3 It has strong alloys.

4 It is resistant to corrosion.

Which properties make aluminium useful in aircraft manufacture?

• 1, 2 and 3

• 1, 2 and 4

• 1, 3 and 4

• 2, 3 and 4

Which conditions are required for rusting?

• air only

• air and water

• salt and water

• water only

Which process and type of reaction describes the formation of lime from limestone?

• A

• B

• C

• D

Ethene is formed when decane, C₁₀H₂₂, is passed over hot aluminium oxide. The aluminium oxide is unchanged in this process. Which terms describe the type of reaction and the role of the aluminium oxide?

• A

• B

• C

• D