Across
- 1. a particle of matter with no charge
- 4. an element that resembles both a metal and a nonmetal
- 8. an electrically charged atom
- 9. the smallest unit of a compound
- 11. positively charged atomic particles
- 12. a region where electrons are located
- 13. relating to living organisms
- 14. a column in the periodic table
Down
- 2. the basic chemical substances from which all matter is made
- 3. a solid, inorganic substance such as graphite or gold
- 5. a substance formed by the chemical reaction of two or more elements
- 6. a particle of matter with a negative charge
- 7. a row in the periodic table
- 8. atoms of the same element that contain different numbers of neutrons
- 10. the smallest unit of an element