Thermal decomposition summary

Making quicklime

If limestone is heated strongly, it breaks down to form calcium oxide and carbon dioxide. Calcium oxide is also called quicklime. It is yellow when hot, but white when cold.

Here are the equations for this reaction:

calcium carbonate→ calcium oxide + carbon dioxide

CaCO3 →CaO + CO2

This is a thermal decomposition reaction.

summary-the uses of limestone

Limestone reaction cycle

Limestone reaction cycle chemistry

Limestone info!

http://www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/rocks/limestonerev1.shtml

Decomposition of limestone homework 15.10.12

 

•Write down three ways limestone has been used in your house

•Find a limestone building in Oxford

•Produce a story board & describe what happens when limestone is heated during the thermal decomposition reaction.  You must refer to:

1. the word & symbol equation

2.Formation of quicklime

3.Reactants & products

Use the BBC bitesize website to help you if you get stuck

http://www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/rocks/limestonerev2.shtml

Limestone homework 15th october due in Monday 22nd october

Periodic table homework

You need to produce a poster about your element from the periodic table.

You need to include:

• The symbol & name
• The atomic number & mass
• The atomic structure
• The electron arrangement
• Uses of the element

Due in Monday 15th October