Across
- 3. what is used to clean skin before operations?
- 4. on the PH scale below 7?
- 7. what hazard symbol has a flame on it?
- 8. what hazard symbol has a skull on it?
- 9. how do alkalis feel?
- 12. this eats plants and animals?
- 13. what is used to kill germs in a pool?
- 16. this does not have a backbone?
- 18. what is the middle section called on the periodic table?
- 19. this eats its own energy?
Down
- 1. units to measure energy?
- 2. what side of the heart is thicker?
- 4. on the PH scale above 7?
- 5. only eats animals?
- 6. what side of the heart is de-oxygenated blood?
- 10. how do acids taste?
- 11. this has a backbone?
- 14. only eats plants?
- 15. what colour is our blood?
- 17. has the PH of 7?