Page 104 - Science Coursebook

Unit 7
Unit 7 End of unit questions

7.1 The diagram shows an experiment in which hydrochloric acid is added to a
calcium salt. The gas carbon dioxide is given off.

a Use the information to work out which calcium salt is being used. [1]
b How would you test the gas to check it is carbon dioxide? Remember to
include the change you would expect to see. [2]
c Name the salt that is produced in this reaction. [1]

7.2 Write the word equations for the following:
a the reaction between magnesium and sulfuric acid [1]
b the reaction between aluminium and sulfuric acid [1]
c the reaction between potassium hydroxide and nitric acid [1]
d the reaction between copper carbonate and hydrochloric acid. [1]

7.3 Name the salt formed in a reaction between the substances given below:
a citric acid and calcium carbonate [1]
b nitric acid and aluminium [1]
c hydrochloric acid and ammonia [1]
d ammonium hydroxide and sulfuric acid. [1]

102 7 Salts