Page 111 - Science Course 2 (Book 1)

Mo4-L2a: How Are Substances, Compounds, and Mixtures Different?

Let’s Begin Mixtures

Matter: Substances and Mixtures which may be
Nearly all types of matter can be sorted into just two
major categories— substances and mixtures.
Homogeneous Heterogeneous
A substance is matter that is always made up of the
same combination of atoms.

A compound is matter made of atoms of two or
more elements chemically bonded together.

Substances
Key Concept
which may be How Are Substances, Compounds, and Mixtures
Different?
How do substances and mixture differ?
Elements Compounds

There are two types of substances—elements and
compounds.

Substances
Elements Compounds

Sodium
Chlorine Chlorine
(Cl )
2 (NaCI)

Water
Oxygen (0 )
2 (H O)
2

Methane
Carbon (C)
(CH ) A heterogeneous mixture is a mixture
4
in which substances are not evenly
mixed.
A mixture is two or more substances that are A homogeneous mixture is a mixture
physically blended but are not chemically bonded in which two or more substances are
together.
evenly mixed on the atomic level but not
bonded together.
The amounts of each substance in a mixture can vary.
Another name for a homogeneous
There are two different types of mixtures— mixture is solution.
heterogeneous and homogeneous.

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