Across
- 2. the second element
- 4. the centre of a cell
- 8. particle with neutral charge
- 9. particle with negative charge
- 11. what a sponge does to water
- 12. the first element
- 15. what everything is made of
Down
- 1. what radiation does to cells
- 3. created to balance a charge
- 5. particle with positive charge
- 6. where electrons are contained
- 7. a particle can become:
- 10. the radiation found in fire alarms
- 13. after a certain period things can:
- 14. the wave like radiation