Across
- 5. Can't be broken down into simpler substances
- 7. Elements that do not react with other elements
- 9. Definite volume but no definite shape
- 10. properties such as flammability or reactivity
- 12. Properties such as size, color, shape
- 13. Has a definite volume and shape
- 14. Particle with no charge
- 15. The amount of mass in a given volume
Down
- 1. The nuber of protons in an element.
- 2. Used to classify the 118 different elements
- 3. Good conductors of heat and electricity
- 4. The smallest part of an element
- 6. No definite volume or shape
- 8. Negatively charged particle outside the nucleus
- 11. 2 or more elements chemically combine
- 12. Positively charged particle inside the nucleus