Unit 2 Vocabulary
by Jessica Dunbar
1. mixtures: a substance made by mixing other substances together.
1.1. example: salt & water
2. colloids: homogeneous, noncrystalline substance consisting of large molecules or ultra microscopic particles of one substance dispersed through a second substance.
2.1. example: gels
3. elements: a substance that cannot be decomposed into simpler substances by chemical means, and is made up of atoms all with identical number of protons.
3.1. example: oxygen
4. compounds: a thing that is composed of two or more separate elements.
4.1. example: NaCl - salt
5. homogeneous mixtures: the same uniform appearance and composition throughout.
5.1. example: corn oil
6. heterogeneous mixtures: made of different substances that remain physically separate.
6.1. example: sand & sugar
7. pure substances: substances that are made of only one type of atom or only one type of molecule.
7.1. example: sulfur
8. solutions: a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).
8.1. example: dissolving table salt in water
9. suspension: heterogeneous mixture in which solute-like particles settle out of a solvent-like phase some time after their introduction
9.1. example: sand in water
10. matter: physical substance in general, as distinct from mind and spirit; that which occupies space and possesses rest mass
10.1. example: solids, liquids, gases
