Across
- 2. Monoxide A product of incomplete combustion that is toxic (14 letters)
- 6. A liquid fossil fuel used in cars (6 letters)
- 7. Dioxide The product formed when carbon burns in plenty of oxygen (14 letters)
- 8. The energy released during combustion, felt as warmth
Down
- 1. A common fossil fuel used for combustion in homes (3 letters)
- 3. The gas needed for combustion to occur
- 4. The type of combustion that happens with enough oxygen (8 letters)
- 5. The chemical process that releases energy from fuel (7 letters)
- 7. A solid fuel used in barbecues (8 letters)