Across
- 2. which group on the periodic table has 6 valence electrons
- 6. what is the formula for decomposition
- 8. what is the difference between a chemical reaction and a nuclear reaction
- 9. what is the formula for oxidation
- 10. what is the most dangerous type of ray?
- 12. which element on the periodic table has a mass of 1
- 13. what is the formula for single replacement
- 14. when the atom becomes more negative do the amount of electrons increase or decrease
- 15. what are the 5 covalent bonds
Down
- 1. what is contained in the nucleus of an atom
- 3. when the atom becomes less negative do the amount of electrons increase or decrease
- 4. what is the formula for synthesis
- 5. which group on the periodic table has 8 valence electrons
- 7. what is the formula for double replacement
- 11. which group in the periodic table has 1 valence electron