Across
- 5. measures the amount of space and object takes up
- 7. number is the number of protons
- 8. are negatively charged moving particles of atom
- 9. smallest part of an element
- 10. number is rounded mass. the amount of protons and neutrons combined
- 12. is a definite volume, but not space
Down
- 1. mass is the average mass of the types of atoms
- 2. are positively charged particles of the atom
- 3. is a pure substance
- 4. are charge-less particles of atoms
- 6. has no definite volume or shape
- 10. is the amount of matter in an object
- 11. has a definite shape and volume