Chemistry - C4
Across
- 2. can be either positive, negative or no ______ for an atom
- 5. bond between a metal and non metal
- 6. number of protons + neutrons in nucleus
- 7. number of protons
- 10. sub atomic particle with a positive charge
- 11. if a halogen added to a solution of a compound containing a less reactive halogen, it will react with the compound and form a new one
Down
- 1. sub atomic particle with a negative charge
- 3. have high melting points, conducts electricity in a solution but does not when solid
- 4. group 7 elements
- 8. copy of a certain atom, but has the same number of protons but different number of neutrons
- 9. sub atomic particle with no charge (neutral)