Across
- 4. the state of matter in which particles are far apart, move rapidly, and have little interaction with eachother
- 6. a particle consisting of two or more atoms covalently bonded together
- 7. the building block of all matter; consists of protons, electrons, and (usually) neutrons
- 9. a mixture that has a uniform appearance throughout; also known as a solution, especially of a solid dissolved in a liquid
- 10. the state of matter in which particles are close together but can move around
- 11. anything that has mass and occupies space
- 12. the mass per unit volume of an object
- 13. the state of matter in which particles vibrate in fixed positions, giving a substance a fixed shape and volume
- 16. a pure substance that consists of atoms with the same atomic number
- 18. the law that states that the masses of chemical substances combine in definite, characteristic integer ratios when forming compounds
- 19. the force of gravity acting on the matter in an object
Down
- 1. a physical combination of two or more substances in a changeable ratio
- 2. a model that states that all physical matter exists in the form of particals
- 3. a gas-like state of matter, formed at very high temperatures, that consists of high-energy ions and free electrons
- 5. a mixture that does not have a uniform appearance since the combined substances are unevenly distributed
- 8. a material made of only one kind of element or compound
- 14. the space enclosed or occupied by an object
- 15. a pure substance consisting of atoms of two or more elements that are chemically combined in a fixed ratio
- 17. the measure of the amount of matter in an object