This document discusses properties of mixtures and solutions. It defines a mixture as a combination of two or more substances that are not chemically combined and retain their individual identities. Mixtures can be separated by physical means like filtration or evaporation. A solution is a homogeneous mixture where particles are distributed evenly between a solute dissolved in a solvent. Solutions can be liquids, gases or solids, while insoluble substances form mixtures that are not true solutions.

1. Physical Science
Chapter 5, Section 3
Notes from 10/28/10

2. Section 3 MixturesChapter 5
Properties of Mixtures
• A mixture is a combination of two or
more substances that are not
chemically combined.
• Each substance in a mixture keeps its
identity because no chemical change
happens when a mixture is made.

3. Section 3 MixturesChapter 5
Properties of Mixtures,
• Mixtures can be separated by physical
means, such as filtration, evaporation,
and distillation.
• The components of a mixture do not
need to be mixed in a definite ratio.

4. Elements, Compounds, and
MixturesChapter 5

5. Section 3 MixturesChapter 5
Solutions
• A solution appears to be a single
substance, but it is actually a
homogeneous mixture composed of
particles of two or more substances that
are distributed evenly among each
other.
• In solutions, the solute is the substance
that is dissolved. The solvent is the
substance in which the solute is
dissolved.

6. Section 3 MixturesChapter 5
Solutions, continued
• A substance that is insoluble, or unable
to dissolve, forms a mixture that is not a
solution.
• Solutions may be liquids, gases, or
solids.
• Alloys are solid solutions in which
metals or nonmetals are dissolved in
other metals.

7. Section 3 MixturesChapter 5
Solutions, continued
• A substance that is insoluble, or unable
to dissolve, forms a mixture that is not a
solution.
• Solutions may be liquids, gases, or
solids.
• Alloys are solid solutions in which
metals or nonmetals are dissolved in
other metals.