Across
- 2. formed when iron gets corroded
- 4. a more reactive element displaces another in a compound
- 6. reaction that includes decomposition by sunlight
- 10. a type of decomposition using heat
- 11. reaction that takes in heat energy
- 12. gain of hydrogen
- 13. chemical reaction where one product formed is a precipitate
- 15. exposure of metals to air and water
Down
- 1. reaction that gives out heat energy
- 3. gas of brown color
- 5. reaction involving breakdown of one reactant into several products
- 7. a type of reaction where acid and base combine to form salt and water
- 8. equal numbers of atoms
- 9. two reactants combine to form a single product
- 14. type of reaction involving oxidation and reduction