Chemistry C2 5.0 / 5 based on 1 rating ? ChemistryAll of C2GCSEOCR Created by: aliceinwonderland2000Created on: 01-06-16 13:22 47685321 Across 1. It is the outer layer of the earth and consists of the crust and the top part of the mantle. (4, 2, 3, 11) 6. When limestone is heated with clay (3, 2, 6, 4) Down 2. The aerobic bacteria useup the little oxygen left and feed on the dead and decaying plants, meaning most organisms die. (4) 3. A soluble base (4, 2, 2, 6) 4. When fertilisers are washed into ponds, lakes and rivers, encouraging algae growth. (4, 2, 14) 5. A mixture containing at least one metal (4, 2, 2, 5) 7. By mixing cement, sand and small stones with water (3, 2, 8, 4) 8. When magma rises up through the Earth's crust because it is less dense than the crust. (4, 6, 8)
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