Across
- 3. subatomic particle with a positive charge
- 8. 2 substances combine to create a new substance
- 11. subatomic particle with no charge
- 12. Form of matter is altered but not the substance
- 13. properties that do not change chemical nature
- 15. degree of compactness in a substance
- 16. particle smaller than an atom
- 19. Same number of protons and element but different neutrons
Down
- 1. anything that occupies space and has mass
- 2. mass of an atom
- 4. Behavior of a substance in a chemical change
- 5. positively charged central core of an atom
- 6. Number of protons in the nucleus of an atom
- 7. degree where a material conducts electricity
- 9. cloud Region of electrons surrounding a nucleus
- 10. atom/molecule with electrons that are not equal to protons
- 14. material stretches into a wire under stress
- 17. the basic unit of a chemical element
- 18. level Fixed amount of energy that a system can have