Elements, Compounds, and Mixtures

Compounds and

Chemical Reactions

Elements

●An element is a substance that

cannot be broken down into simpler

substances.

●On the periodic table

●Pure, not bonded with other

●Examples:

○Carbon (C )

○Oxygen (O)

○Helium (He)

Multiple Choice

What is an example of an element?

• Hydrogen

• Water

• Air

• Carbon Dioxide

Compounds

●More than one element bonded together

●Has a chemical formula

●Examples:

○Water (H20)

○Fructose/Sugar (C6H12O6)

○Baking Soda (NaHCO3)

• Cannot be separated by physical means

Dropdown

Compounds are ​

Select answer

Mixtures

●A substance made by combining 2 or more substances together

●Not chemically combined

●No chemical reaction occurs

●Examples:

○Lemonade

○Chocolate Milk

○Pizza

●Heterogeneous vs. Homogeneous

○Heterogeneous - can see the different parts of the mixture (Ex: Pepperoni Pizza)

○Homogeneous - cannot see the different parts of the mixture (Ex: Chocolate milk)

• Can be separated by physical means

What can we break this word into?



Have you seen this prefix before?

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Word Study:
Heterogeneous

What can we break this word into?



Have you seen this prefix before?

​

Word Study:
Homogeneous

Categorize

Options (12)

chocolate milk

pepperoni pizza

water

air

taco

sugar

salt water

fruit salad

salt

Hydrogen

Oxygen

Sulfur

Organize these options into the right categories

Homogeneous

Heterogeneous

Compound

Element

Are markers a mixture?

Let's find out...

How can we test to see if markers are a mixture?​

Chromatography lab

Chemical Reactions

●

A process in which one

or more substances, also
called reactants, are
converted to one or more
different substances,
known as products.
Substances are either
chemical elements or
compounds.

Chemical Equations