Across
- 3. a form of matter made up by one type atom
- 5. anything that has mass and takes space
- 7. the negatively charged particles orbiting the nucleus
- 8. the smallest particle of an element that still has the same properties of that element
- 10. a change in the property of a substance that doesn't make something new
- 12. the substances are uniformly mixed
Down
- 1. the substances are not uniformly mixed
- 2. the neutrally charged particles in the atom's nucleus
- 4. a change in a substance that results in something new and it cannot be reversed
- 6. the positively charged particles located in the atom's nucleus
- 9. two or more elements or compounds mixed together physically
- 11. a substance produced when 2 or more elements combine chemically, it cannot be separated