Across
- 5. anything that takes up space
- 8. mixture that has uniform appearance
- 9. neutral part of an atom
- 10. negative charge of an atom
Down
- 1. two or more substances physically combined
- 2. does not have a uniform appearance
- 3. positive charge of an atom
- 4. pure substances made of one type of atom
- 6. basic building blocks of matter
- 7. two or more elements chemically combined