Across
- 2. is negative charge
- 8. is neutral charge
- 9. used for mixtures
- 10. a tool used to watch very small things in a lab
- 11. stop the water
Down
- 1. is positive charge
- 3. is complusory in laboratory
- 4. name given to a proton or a neutron
- 5. the english for " fer"
- 6. we can manipulate on it
- 7. the english for " amidon en poudre "
- 12. composed of electrons protons and neutrons