Across
- 1. the atoms on the periodic table.
- 4. anything that has mass and takes up space.
- 5. this part of an atom has no charge.
- 6. state of matter that has no definite volume or shape.
- 8. positively charged part of an atom.
- 9. state of matter with a definite volume, but no definite shape.
- 11. the electron is the ______ part of an atom.
- 12. basic building block of matter.
Down
- 1. negatively charged part of an atom.
- 2. the electron never stops moving.
- 3. all the elements on Earth.
- 7. state of matter that has a definite shape and volume.
- 10. 99% of an atom is made up of this.