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Topic 2 Materials from the Earth

2.1 Describe that igneous rocks, such as granite, are:
a formed by the solidification of magma or lava
b made of crystals whose size depends on the rate of cooling

2.2 Describe chalk and limestone as examples of sedimentary rocks

2.3 Describe how sedimentary…

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2.16 Demonstrate an understanding that the total mass before and after a reaction in
a sealed container is unchanged, as shown practically by a precipitation reaction
2.17 Explain how calcium oxide, calcium hydroxide and calcium carbonate can be used
to neutralise soil acidity

2.18 Explain how calcium carbonate can be…


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