Across
- 2. a chemical reaction that requires oxygen
- 3. a physical property of metal
- 8. the reaction of mixing acid and alkali
- 9. the substances formed from a reaction
- 10. iron reacts with ___ to form iron sulfide
- 11. the gas formed when metal reacts with acid
Down
- 1. an equipment used to neutralise alkali
- 4. medicine to treat indigestion
- 5. a substance that tastes sour
- 6. produces acid in the mouth
- 7. a metal very reactive with water
- 9. a measurement of acidity and alkalinity