Chemistry
Across
- 3. A type of combustion carried out by all living things
- 7. A substance that turns litmus paper red and tastes sour
- 8. A substance that turns litmus paper blur and tastes bitter
- 10. A chemical reaction that is caused when an acid and a base is mixed
- 11. A reaction where two solutions combine to form a precipitate
- 13. combustion A substance burning in less oxygen
- 15. A metal reacting with oxygen
- 16. A reaction that releases heat energy
- 17. dioxide A gas that turns lime water milky and cloudy
Down
- 1. Something that gives a visual sign of an acid/base
- 2. Burning a substance in oxygen
- 4. rain Precipitation with high level of nitric acid or sulphuric acid
- 5. A reaction that absorbs heat energy
- 6. A gas that is tested by a pop test
- 9. A fundamental and basic building block of matter
- 12. A gas that is tested by bringing a glowing splint in front of a test tube and it starts burning
- 14. reaction Substances react to form new substances by rearranging atoms