Across
- 4. the four most common elements
- 7. anything that has mass and takes up space
- 8. building blocks of all matter
- 9. a distinct group of two or more atoms covalently bonded together
- 11. reactants always combined in the same ratio
- 13. does not have a uniform appearance since the substances are evenly distributed
- 14. states that all physical matter exists in the form of particels
- 16. the measure of gravity acting on the matter in an object
Down
- 1. mass of matter contained within a particular volume
- 2. space enclosed or occupied by an object
- 3. material made of only one kind of element or compound
- 5. different substances are mixed so that they have a uniform appearance throughout
- 6. a pure substance that consists of atoms of two or more different elements
- 10. a physical combination of two or more substances
- 12. a pure substance that consists of atoms with the same atomic number
- 15. amount of matter in an object