Across
- 2. Anything that has mass and takes up space.
- 3. There are 18 of these that run top to bottom vertically.
- 5. The basic unit that makes up all matter.
- 8. The large particle in the nucleus of an atom that has no charge.
- 9. The sum total of electrons and neutrons in the atom.
- 11. There are 7 of these that run from left to right horizontally.
- 13. Heat and electricity move through them easily.
- 14. Having a shiny surface or reflecting light brightly.
Down
- 1. A way to organize and display elements based on properties.
- 4. The negatively charged sub-atomic particle found in the space around the nucleus.
- 6. Ability to be hammered into different shapes.
- 7. The positively charged sub-atomic particle found in the nucleus of an atom.
- 9. The number of protons in the nucleus of an atom. This identifies the element.
- 10. A pure substance that is made of only one type of atom.
- 12. Ability to be drawn into a wire.