Across
- 2. The center of an atom containing protons and neutrons.
- 6. Characteristics used to identify elements.
- 7. How readily an element combines with other substances.
- 9. The smallest unit of matter, consisting of protons, neutrons, and electrons.
- 10. A one- or two-letter abbreviation for an element.
Down
- 1. The ability of a material to transfer heat or electricity.
- 3. A pure substance that consists of only one type of atom.
- 4. Vertical columns on the periodic table that share similar properties.
- 5. Horizontal rows on the periodic table showing repeating patterns.
- 8. Negatively charged particle found in energy levels around the nucleus.