Across
- 3. a substance made of atoms of more
- 5. the smallest unit of a substance that
- 6. one element bound together.
- 8. the smallest particle that has the properties of an element.
- 9. a substance that cannot be broken down
- 13. all of the properties characteristic of that
Down
- 1. the chemical symbols and
- 2. a combination of more than one pure substance.
- 4. any matter that has a fixed composition and definite properties.
- 7. indicating the atoms contained in the basic
- 10. is anything that has mass and occupies
- 11. of a substance.
- 12. simpler substances.