1The Diagram Shows the Apparatus for Making Carbon Dioxide Gas

HELP

1The diagram shows the apparatus for making carbon dioxide gas.

aStick down the diagram.

bLabel it using the words below.

CORE

2To test a gas to see if it is carbon dioxide, you bubble the gas through a special solution.

aWhat is the name of this special solution?

bWhat happens when you bubble carbon dioxide through it?

3Here are some statements about what happened when some chemicals were mixed. Write ‘true’ if you think the statement is correct. If you think something is wrong, rewrite the statement so that it is correct. Do not change the underlined part.

aWhen you mix sulphuric acid with copper carbonate, the mixture fizzes.

bHydrogen gas is formed from a mixture of copper carbonate and sulphuric acid.

cIf you test the gas from a mixture of magnesium and hydrochloric acid, it turns limewater milky.

dSherbet contains an acid and a type of metal carbonate, so when it gets wet, it gives off hydrogen gas.

4Rainwater is naturally acidic. Over a long period of time, buildings made from limestone (calcium carbonate rock) slowly weather away. Explain why rainwater has this effect on limestone buildings.

5When you add a small amount of solid magnesium carbonate to a lot of hydrochloric, the solid ‘disappears’. Write a sentence to explain where it goes.

This worksheet may have been altered from the original on the CD-ROM.

EXTENSION

6Copy and complete the table, which is about the products formed during different chemical reactions.

Reactant 1 / Reactant 2 / Product 1 / Product 2 / Product 3
hydrochloric acid / zinc metal / hydrogen
sodium carbonate / sulphuric acid / water
hydrochloric acid / copper carbonate / water

7Nitric acid is another common acid. When it reacts with a metal carbonate, you see the same things that you see using hydrochloric acid. However, nitric acid gives nitrates instead of chlorides.

Write a word equation to represent the reaction that would take place if you mixed zinc carbonate with dilute nitric acid.

This worksheet may have been altered from the original on the CD-ROM.

HELP

Apparatus for making carbon dioxide gas

HELP

Apparatus for making carbon dioxide gas

This worksheet may have been altered from the original on the CD-ROM.