What have diamonds got to do with carbon?

Is there carbon atoms in sugar (sucrose)?

Decomposition.In your exercise books write down the scientific meaning of the term 'decomposition.'

RespirationIn your exercise books write down the chemical word equation for 'respiration.'Extension: Can you sketch a diagram to describe this chemical reaction?

CombustionDescribe how carbon gets added to the atmosphere when fossil fuels are burned.

Name the common element in all three images shown below.

Sketch this in your exercise books.

The process by which fuels react with oxygen to release carbon dioxide and thermal energy.

A chemical reaction that releases energy. It uses up glucose and oxygen. Carbon dioxide and water are produced.

Green plants do this to make glucose. It uses light energy to react carbon dioxide with water. Oxygen is released.

The scientific word for rotting. Fungi, bacteria and detritus feeders (e.g. maggots) breakdown dead organisms. The nutrients go into the soil. Carbon dioxide is released into the air.

Answer in your exercise books.In which sections of the carbon cycle does the amount of carbon dioxide go down and which sections does it go up? Does this suggest that the carbon dioxide in the atmosphere is balanced?

Carbon cycle How is carbon used and recycled on Earth?