Across
- 4. A particle that doesn't have charge and is found inside of the nucleus of an atom
- 5. The Atomic Mass Unit
- 8. A particle and has a negative charge
- 9. A state of matter that doesn't have a definite shape but does have a definite volume
Down
- 1. Atoms of the same element that have different numbers of neutrons
- 2. The Smallest Particle of an Element
- 3. A state of matter that has no definite shape and no volume
- 4. The center of an atom
- 6. Anything that has mass and also will take up space
- 7. A state of matter that has a definite shape and also has a definite volume