Across
- 1. takes up space
- 4. hard but liable to break or shatter easily.
- 6. no electric charge
- 7. made of steel
- 10. block of chemistry
Down
- 2. negative charge on atom
- 3. positive charge on atom
- 5. charge central core of atom
- 8. polished metal
- 9. a part or aspect of something abstract,