Chemistry Overview 5.0 / 5 based on 1 ratingTeacher recommended ? ChemistryAtomsGCSEAQA Created by: AshCreated on: 14-02-18 12:52 79105216384 Across 1. A substance that can be burned to release energy (4) 3. A substance that accelerates a reaction without actually being a reactant or a product (8) 4. Type of combustion that releases carbon monoxide (10) 5. This gas is produced when a metal reacts with an acid (8) 8. A negatively charged ion (5) 9. Type of polymerisation with one product (8) Down 2. The Haber process involves this type of reaction (10) 6. Type of bonding involving two non-metal atoms (8) 7. A catalyst in biological systems (7) 10. Litmus paper and phenolphthalein are examples of this (9)
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