Across
- 3. measures the amount of space a object occupies
- 5. is a state of matter that has no fixed shape and no fixed volume
- 7. a substance that cannot be broken down into any other substance
- 10. the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table
Down
- 1. The phase between solid and gas
- 2. This has a positive charge and is in the nucleus
- 4. the mass of an atom of a chemical element expressed in atomic mass units
- 6. one of the three main states of matter, particles packed closely together
- 8. makes up everything
- 9. A tiny particle of matter