Across
- 2. property Property describing a substance’s reactivity
- 3. theory Idea that all matter is made of atoms
- 5. State of matter made of charged particles
- 7. change Change that does not form a new substance
- 10. Discovered the nucleus
- 11. State of matter with definite volume but no fixed shape
- 13. State of matter with fixed shape and volume
- 15. change Change that produces a new substance
- 16. Amount of space an object occupies
- 18. Force of gravity on an object’s mass
- 20. Developed modern atomic theory
- 23. mixture Unevenly mixed substance
Down
- 1. property Property observed without changing identity
- 4. of matter Physical form of a substance
- 6. Substance being dissolved
- 8. Developed quantum mechanical model of the atom
- 9. A uniform mixture of two or more substances
- 12. First proposed the concept of the atom
- 13. Substance that dissolves another
- 14. Proposed electrons orbit the nucleus in shells
- 15. of mass Matter cannot be created or destroyed
- 17. Amount of matter in an object
- 19. State of matter with no fixed shape or volume
- 21. Discovered the electron
- 22. Mass per unit volume of a substance