1. Physical Science

2. Section 2.1 What is Matter? (p. 38)
Chapter 2 Matter
Section 2.1
What is Matter? (p. 38)

3. Understand the nature of matter
Objectives
Understand the nature of matter
Differentiate between a pure substance and a mixture

4. Chemistry- study of compositions,
structures, properties, and its changes
and interactions
I. Composition (chart on p. 39) Matter-
anything that has mass and occupies space
A. Atoms
1. Element- not made of any other
substance- cannot be broken down by
chemical means
2. Atom- smallest part of an element that still retains all properties of the element

5. B. Elements combine chemically to form compounds
Molecule- smallest part of a compound that
still retains all properties of the compound
C. Chemical formula- 2 C6H12O6
Element
Coefficient
Subscript

6. II. Pure Substances and Mixtures
A. Pure substance- substances with
fixed compositions with definite
properties
Can be an element or a compound
B. Mixture- 2 or more substances not
chemically combined (sub. keep their
individual properties)
1. Classified by how thoroughly they
are mixed

7. a. Heterogeneous mixture- not
thoroughly mixed, particles are of
different sizes
b. Homogeneous- thoroughly mixed,
particles of similar size
2. Two or more liquids mixed
a. Miscible- will dissolve into each other
b. Immiscible- will not dissolve