Across
- 4. Gain of oxygen by a substance during a chemical reaction
- 5. Reaction in which one element replaces another within a compound
- 7. Reaction between an acid and base forming water and salts
- 9. Solid that forms from a solution during a chemical reaction
- 12. Substance which slows down or stops a chemical reaction
- 13. _ energy is the energy needed to start a reaction
- 14. Substance formed as a result of a chemical reaction
Down
- 1. Chemical reaction in which a single compound breaks down into two or more elements or compounds
- 2. Chemical link that holds molecules together
- 3. Factor affecting rate of reactions
- 6. Reaction that gives out energy in the form of heat
- 8. Reaction that takes in energy in the form of heat
- 10. Substance that speeds up a reaction without being consumed
- 11. Substance that participates in a chemical reaction