Across
- 2. holds atoms in compounds.
- 3. is anything that takes up space.
- 4. Element that is involved in making steel
- 6. atoms held together compounds
- 7. are the building blocks.
- 8. Element
Down
- 1. substances that cannot be separated into simpler parts
- 4. substances chemically mix together.
- 5. Mixture
- 6. is a substance physically mix together.