Across
- 6. subatomic particle with negative electrical charge
- 7. plant reaction to gravity
- 9. subatomic particle neutral electrical charge
- 11. made of one element or more
- 12. plant reaction to water
- 13. a substance that can not be created or destroyed chemically
Down
- 1. outer most shell of atom
- 2. number on the left of compund shows m olcule number
- 3. reacts to particular substances.
- 4. subatomic particle with positive electrical charge
- 5. plant reaction to touch
- 8. plant reaction to light
- 10. small number under line shows atoms of elements