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