Across
- 2. A type of combustion that produces carbon monoxide
- 5. What a chemical reaction must be
- 8. The liquid that turns cloudy when carbon dioxide is present
- 9. The gas substances react with during oxidation reactions
- 11. A change in which no new substances are made
- 12. Needed for thermal decomposition
Down
- 1. When atoms are rearranged, forming new substances
- 3. The things we start a chemical reaction with
- 4. A burning reaction that produces carbon dioxide and water
- 6. The things we make from a chemical reaction
- 7. The colour cobalt chloride paper turns in water
- 10. The thing that is always conserved in a chemical reaction