Across
- 4. the chemical symbols and numbers indicating the atoms contained in the basic unit of a substance
- 6. mixing occurs between individual units
- 8. the smallest particle that has the properties of an element
- 9. a substance that cannot be broken down into simpler substances
- 10. any matter that has a fixed composition and definite properties
Down
- 1. a substance made of atoms of more than one element bound together
- 2. the smallest unit of substance that exhibits all of the properties characteristic of that substance
- 3. substance are not uniformly mixed
- 5. a combination of more than one pure substance
- 7. is anything that has mass and occupies space