Across
- 1. The 2nd element on the periodic table
- 4. What has a positive charge which makes an atom?
- 6. What has a negative charge which orbits a nucleus?
- 8. A type of Hydrogen atom with 2 neutrons
- 11. A type of hydrogen atom with 1 neutron
- 12. What is everything made out of?
- 13. The collision of two hydrogen atoms
- 14. The strongest fuel for fission
- 15. The Periodic table lists these
- 17. The plural of the Protons and Neutrons
Down
- 1. The first element on the periodic table
- 2. The process of the extra neutron fired out in a nuclear reaction
- 3. The weaker fuel for fission
- 5. What is the electricity inside a sub-atomic particle called?
- 7. What has no charge which makes an atom?
- 9. The different versions of an element
- 10. What is the process of splitting an atom called?
- 16. Comes out in nuclear reactions