Chemistry Overview 5.0 / 5 based on 1 ratingTeacher recommended ? ChemistryAtomsGCSEAQA Created by: AshCreated on: 14-02-18 12:52 83675102419 Across 1. A negatively charged ion (5) 5. This gas is produced when a metal reacts with an acid (8) 6. A catalyst in biological systems (7) 9. Type of bonding involving two non-metal atoms (8) Down 2. A substance that accelerates a reaction without actually being a reactant or a product (8) 3. The Haber process involves this type of reaction (10) 4. Litmus paper and phenolphthalein are examples of this (9) 7. Type of polymerisation with one product (8) 8. A substance that can be burned to release energy (4) 10. Type of combustion that releases carbon monoxide (10)
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