Across
- 1. A substance that undergoes change during a chemical reaction.
- 6. A reaction in which one reactant is oxidized and another is reduced simultaneously.
- 7. A reaction in which a single reactant breaks down into simpler products.
- 9. The process in which a substance gains oxygen or loses hydrogen during a chemical reaction.
- 11. A new substance formed as the result of a chemical reaction.
- 13. A chemical reaction in which energy-heat- is absorbed from the surroundings.
- 14. A reaction in which two or more reactants combine to form a single product.
- 15. The oxidation of fats and oils in food, which causes them to become rancid – that is, to develop off-smells and tastes.
Down
- 2. The chemical process by which metals are gradually degraded by reaction with substances like moisture or acids
- 3. A reaction in which two compounds exchange ions to form two new compounds.
- 4. A reaction in which an insoluble solid-precipitate-is formed when two aqueous solutions react.
- 5. A concise symbolic representation of a chemical reaction, showing reactants and products with their formulas.
- 8. A chemical reaction that releases heat to the surroundings as the products form.
- 10. A reaction in which a more reactive element displaces another from its compound
- 12. The process in which a substance loses oxygen or gains hydrogen during a chemical reaction.