Across
- 1. smallest particle of an element
- 4. made of only one type of atom
- 5. formed when two or more elements react and join together
- 8. centre of an atom
- 10. smallest particle of a compound
Down
- 2. on the left of the periodic table
- 3. table listing all elements in order of size
- 4. negatively charged, orbitting the nucleus
- 6. on the the right of the periodic table
- 7. centre of an atom
- 9. positively charged, in the nucleus