1. matter: anything that occupies space and has mass
2. density: mass of material within a given volume
3. physical properties: properties that can be observed and measured without changing the chemical makeup of the substance
4. freezing point: a physical property that is 0 degrees celsius at normal atmospheric pressure
5. aqueous solution: a water-based solution
6. pure: distilled water
7. mixture: a combination of two or more substances that still hold their individual properties
8. heterogeneous mixture: a composition of substances that are not uniform or the same throughout
9. suspension: a type of mixture in which solid particles are large enough to be filtered and settled out
10. Tyndall effect: the scattering of the light to identify small, solid particles in water
11. colloid: a type of mixture that contains small, solid particles
12. homogeneous mixture: a composition of substances where the substances are mingles together and appear to be uniform
13. solutions: a homogeneous mixture
14. solute: the dissolved substance
15. solvent: the dissolving agent
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