Across
- 1. the study of particles and chemicals
- 3. a chart of elements
- 4. a mixture of 2 or more elements
- 5. harmful to life
- 8. a negative charged ion
- 9. a substance made of only one type of atom
- 11. a positive charged ion
- 13. a neutral charged particle in an atom
- 14. what elemants are made of
Down
- 1. the process of transformation from one substance too another
- 2. what the electrons float around in
- 6. an atom with full electron shells
- 7. a negative charged particle that floats around an atom
- 10. more than 1 thing combined
- 12. a positive charged particle in an atom