Classifying Matter Review

Copyright © Savvas Learning Company LLC. All Rights Reserved. Savvas is not responsible for any modifications made by end users to the content posted in its original format.

Copyright © Savvas Learning Company LLC. All Rights Reserved. Savvas is not responsible for any modifications made by end users to the content posted in its original format.

Classifying Matter

Copyright © Savvas Learning Company LLC. All Rights Reserved. Savvas is not responsible for any modifications made by end users to the content posted in its original format.

Copyright © Savvas Learning Company LLC. All Rights Reserved. Savvas is not responsible for any modifications made by end users to the content posted in its original format.

Learning Objectives

▪ Describe what makes up matter.
▪ Describe the properties of a mixture.

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What Is Matter Made Of?

Element: a substance that cannot be broken down into any other substances by chemical or physical means

Gold (Au)

Photo Credit: MarcelClemens/Shutterstock

Word Cloud

Give an example of an element from the periodic table. You can write the name or the chemical symbol.

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Elements vs. Molecules

Element

Element

Molecule

Element: cannot be
broken down into any
other substance

Molecule: group of two
or more atoms held by
chemical bonds

Multiple Select

Identify the molecules from the examples below.

• C₆H₁₂O₆

• He

• O₂

• H

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Atoms and Molecules

Carbon dioxide
CO₂

Water
H₂O

Oxygen
O₂

Ammonia
NH₃

1 carbon atom,
2 oxygen atoms

1 oxygen atom,
2 hydrogen atoms

2 oxygen atoms

1 nitrogen atom,
3 hydrogen atoms

​Subscripts are the small numbers following a chemical symbol. The subscript is the number of atoms of that specific element in the chemical formula. If there is no subscript after a symbol then there is 1 atom of that element.

Multiple Choice

Select the correct number of atoms in the chemical formula:

CuSO₄

• 1 atom of Copper,

  1 atom of Sulfur,

  4 atoms of Oxygen

• 1 atom of Carbon,

  1 atom of Uranium,

  1 atom of Sodium,

  4 atoms of Oxygen

• 1 atom of Copper,

  4 atoms of Sulfur,

  4 atoms of Oxygen

• 4 atoms of Copper,

  4 atoms of Sulfur,

  4 atoms of Oxygen

Multiple Choice

Which Chemical formula contains the number of atoms below:

1 atom of Carbon

2 atoms of Oxygen

• C₂O₂

• C₂O

• CO₂

• CO

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Compounds and Chemical Formulae

Copper

Sulfur

Copper sulfide

Compound: substance of two more elements, chemically combined in a set ratio

Photo Credit: (left) Tyler Boyes/Shutterstock: (Center) Sebastian Janicki/Shutterstock; (right) Mark A. Schneider/Science Source

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Compounds and Chemical Formulae

CO2

Chemical formula: uses symbols to show the elements in the compound and the ratio of atoms

Open Ended

Write the chemical formula for a compound that possess the following:

8 carbon (C) atoms

10 hydrogen (H) atoms

4 nitrogen (N) atoms

2 oxygen (O) atoms

Dropdown

H₂O is an example of a ​

Select answer

because it consists of two different elements in the chemical formula. Co is an example of an ​

Select answer

because it is made up of only one type of element.