Across
- 4. Your food tube
- 6. You have a large and small
- 7. A part of an atom with a positive charge
- 9. What we need to keep us healthy
- 10. Its chemical symbol is "K"
Down
- 1. A gas that goes into water
- 2. When water is absorbed into the atmosphere
- 3. A chemical added to pool water
- 5. A part of an atom with no charge
- 8. A part of science mainly using chemicals