Across
- 2. a state of matter that has no fixed shape or volume
- 4. a group of atoms bonded together
- 7. a thing that is composed of 2 or more separate elements
- 8. a state of matter with similar properties of a gas
- 12. the positively charged dense center of an atom
- 14. a table showing all 92 elements
- 15. a stable particle with positive charge
Down
- 1. anything that takes up space and has mass
- 3. the amount of protons in the atom's nucleus
- 5. a pure substance
- 6. the smallest component of an element
- 9. a state of matter that has a fixed volume but no fixed shape
- 10. a state of matter that has a fixed volume and fixed shape
- 11. a subatomic particle with zero charge
- 13. an elementary particle with negative charge