1. matter - anything that occupies space and has mass.
2. physical properties - properties that can be observed and measured without changing the chemical makeup of the substance.
3. density - mass of material within a given volume
4. freezing point of water - a physical property
5. aqueous solution - a substance that dissolves readily in water
6. mixture - when two or more substances combine and yet the substances retain their individual properties the result is a mixture
7. heterogeneous mixture - a composition that is not the same, or uniform, throughout.
8. suspension - solid particles that are large enough to settle out or can be separated by filtration
9. Tyndall effect- a scattering of light as if bounces/reflects off of small particles
10. colloid - cloudy particles; small solid particles
11. homogeneous mixture - a mixture that is uniform throughout
12. solution - homogeneous mixtures
13. solute - the dissolved substance
14. solvent - the dissolving agent
15. particulate level - the level of its ( the substance's ) atoms and molecules
16. atoms - the building blocks of matter
17. element - one kind of atom that makes up matter
18. compound - a substance that is composed of the atoms of two or more elements linked together chemically in fixed proportions
19. chemical formulas - represents compounds and elements
20. substance - a uniform and definite composition that has distinct properties
21. molecule - the smallest unit of a molecular compound that retains the properties of that substance
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