Across
- 4. NUMBER-the number of protons in the nucleus.
- 6. part of an element that still has traits.
- 8. stable subatomic particle occurring in all atomic nucleus.
- 9. coherent, typically large body of matter with no definite shape.
- 11. that flows freely but is of constant volume.
- 12. subatomic particle of about the same mass as a proton but without an electric charge.
Down
- 1. airlike fluid substance.
- 2. amount of space that a substance takes up.
- 3. and stable in shape.
- 5. a part or aspect of something abstract, especially one that is essential.
- 7. NUMBER-the total number of protons and neutrons in a nucleus.
- 10. substance in general.
- 13. MASS-the mass of an atom.