Across
- 2. the smallest part of an element/building block
- 3. positively charged part of an atom
- 5. is a pure substance that is mad of the same atom
- 8. Has definite shape and volume
- 9. neutral part o an atom
Down
- 1. tells us the mass of the protons and neutrons
- 2. tells us the number of protons
- 4. negatively charged part of an atom
- 6. has definite volume but no definite shape
- 7. has no definite shape or volume