Across
- 5. H2O is also known as this (5 letters)
- 6. Organ that pumps blood (5 letters)
- 7. Not a proton or electron (7 letters)
- 9. Animals that eat only meat (9 letters)
Down
- 1. Centre of an atom (6 letters)
- 2. Gas used in photosynthesis (6 letters)
- 3. Used to measure heat (11 letters)
- 4. Opposite of solid (3 letters)
- 8. The green pigment in plants (7 letters)