Across
- 4. a stable subatomic particle with a charge of negative electricity.
- 6. a gentle sheen or soft glow.
- 7. the basic unit of a chemical element.
- 10. a subatomic particle of about the same mass as a proton, but without any electric charge
Down
- 1. a stable subatomic particle with a positive charge.
- 2. whose properties are intermediate between those of metals and solid nonmetals or semiconductors
- 3. a set of elements occupying an entire horizontal row in the periodic table.
- 5. easy to break or shatter easily.
- 8. any substance that has mass and takes up space by having volume.
- 9. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction