Page 10 - Science Course 1 (Book 2)

Classif cation of Matter Mo7-L1a: What is a Substance?

Lesson 1

Let’s Begin
In this topic, you will learn the following
lessons:
Understanding Matter
Mo.7–L1a: What is a Substance?
Mo.7–L1b: What are the Types of Pure Matter is anything that has mass and takes up
Substances? space.
Mo.7–L1c: What is a Mixture?

Mo7-L1a What is a Substance?

KEY CONCEPTS:
1. What is a substance?

Vocabulary A-Z
Let us learn some vocabulary
Everything you can see is matter, but some things
you cannot not see, like air, are also matter.
Matter
anything that has mass and takes up space. An atom is a small particle that is a building block of
matter.
e

P n P
e n n

P
e e

Atom Atoms
a small particle that is the building block of matter.
At the center of an atom is the nucleus.

Protons, which have a positive charge, and
neutrons, which have no charge, make up the
nucleus.

n
Substance p+ p+ p+ n
matter with a composition that is always the same. n n p+ n
p+ n p+ n

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