Classifying Matter
Presentation
•
Science
•
7th Grade
•
Hard
James Gonzalez
FREE Resource
7 Slides • 6 Questions
1
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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
2
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.
3
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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
4
Word Cloud
Give an example of an element from the periodic table. You can write the name or the chemical symbol.
5
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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
6
Multiple Select
Identify the molecules from the examples below.
C6H12O6
He
O2
H
7
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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.
8
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
9
Multiple Choice
Which Chemical formula contains the number of atoms below:
1 atom of Carbon
2 atoms of Oxygen
C2O2
C2O
CO2
CO
10
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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
11
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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
12
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
13
Dropdown
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
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