Across
- 3. a stable subatomic particle occurring in all atomic nuclei
- 7. a stable subatomic particle with a charge of negative electricity
- 8. the smallest atom
Down
- 1. a table of the chemical elements arranged in order of atomic number
- 2. the smallest unit of ordinary matter that forms a chemical element
- 4. a subatomic particle of about the same mass as a proton but without an electric charge
- 5. cylindrical lab equipment
- 6. the medieval forerunner of chemistry