Chemistry 0620 · IGCSE · Rate of reaction

Rate of reaction — practice question

Cement is produced by heating together calcium carbonate and powdered clay.
(a(i))[1]

Choose from the list the name of the substance that contains calcium carbonate.

(a(ii))[1]

Name the principal constituent of natural gas.

(b)[2]

Complete the word equation for the thermal decomposition of calcium carbonate. calcium carbonate → [BLANK] + [BLANK]

(c(i))[2]

Complete the diagram so that it shows the apparatus used to investigate the volume of carbon dioxide produced in this reaction.

(c(ii))[1]

Name the item of apparatus labelled M in the diagram.

(c(iii))[1]

Suggest the name of another piece of apparatus that can be used to measure the volume of carbon dioxide produced.

(c(iv))[2]

Describe the effect of each of the following on the rate of reaction of dilute hydrochloric acid with calcium carbonate: • Large pieces of calcium carbonate are used instead of powdered calcium carbonate. • The temperature is decreased.

(d)[2]

Explain how carbon dioxide contributes to climate change.

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