© Nuffield Foundation 2013 Practical Work for Learning Combustion of iron wool.

Practical Work for Learning

Combustion of iron wool

Learning outcome

• You will be able to use a scientific model to explain what happens to the mass of iron wool during combustion

What will happen when the iron wool combusts?Make your prediction.

Iron is a solid

Draw diagrams to show the particles.

• Iron is a solid.

• Oxygen is a gas.

• Iron reacts with oxygen in the air to form a new compound called iron oxide.

• During the reaction, the atoms of iron and oxygen combine together.

• Iron oxide is a solid. It can be seen on the surface of the iron wool.

• Because the oxygen has added to the iron, the iron wool is heavier than at the start.

Explaining the change in mass

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