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Mixtures: Digital Stations

Last updated 7 months ago
27 questions

Mixing It Up!



A mixture is a combination of two or more substances. A new substance is not formed in a mixture. Fruit salad, soda, lemonade, mud, a jar of coins– these are all mixtures!

Compounds A mixture is different from a compound. Have you ever heard of H2O? It’s water! Water is a compound made of two hydrogen atoms and one oxygen atom.

A compound has molecules with atoms of different elements. Here are some common compounds: salt, sugar, water, and carbon dioxide. Compounds cannot be separated and you can’t see the individual elements each atom is made of.

A compound has molecules with atoms of different elements. Here are some common compounds: salt, sugar, water, and carbon dioxide. Compounds cannot be separated are each compounds. When you mix them together, you get a mixture.

Solutions
A solution is a special type of mixture. A solution is a mixture in which one substance dissolves in another substance. Solutions are homogeneous, meaning they look the
same throughout.

In a sugar and water solution, sugar dissolves in water. When a substance dissolves, it gets smaller and smaller until you can’t see it. Sugar is the solute, or substance that dissolves in another substance. Water is the solvent, the substance that something dissolves in.


Soda is fizzy because it is a solution that has a gas called carbon dioxide dissolved in liquid.

Physical Properties
In many mixtures, each substance maintains its physical properties. If you combine red grapes and green grapes in a bowl, the red grapes and green grapes still have their physical properties.

In a solution, ingredients’ physical properties can change. Sugar looks different on its own than when it is dissolved in a sugar-water solution.

Separating Mixtures
Mixtures can usually be easily separated into its individual ingredients. For examples, in a mixture of iron filings and pepper, you can use a magnet to attract the iron filings because iron is magnetic. You can separate a mixture of sand and water using a paper filter. Sand collects in the paper coffee filter while the water passes through. You can use a sieve to separate pebbles and sand.
1

Is fruit salad a mixture or a compound?

1

When you combine red grapes and green grapes into a mixture, do the physical properties of the ingredients change?

1

In a saltwater solution, what ingredient would be considered the solvent?

1

What tool can be used to separate a mixture of iron filings and pepper?

1

When you combine sugar and water, what special type of mixture forms?

1

Select only mixtures. Select THREE mixtures.

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The ingredients in a mixture can be easily __________ because they are physically combined.
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A __________ is not a mixture because it is chemically combined.
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In a heterogeneous mixture, the individual ingredients are __________.
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Is water a mixture or a compound?

1

In a saltwater solution, what ingredient would be considered the solute?

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In the video, the three ingredients in the snack mixture are

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A __________, like lemonade, is a homogeneous mixture in which the substances are blended evenly.
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In a solution, __________ are dissolved by the solvent.
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In lemonade, sugar is a solute that is dissolved in __________, the solvent.
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Mixtures can be

3

Select ALL the ways each mixture can be separated. There are 6 total checkmarks.

2

Determine if each item on the left is a solution or not a solution.

solution
not a solution
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Is lemonade a mixture?

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Is lemonade a solution? How do you know?

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A solvent is the substance that there is the most of in a solution. A solute is the substance that is dissolved in a solution.

What is the solvent in lemonade?

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What are the solutes in lemonade?

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Why do you think the recipe calls for sugar to be dissolved in hot water instead of cold water?

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Which mixtures are solutions?

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Which mixtures are NOT solutions?

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Which mixtures can be easily separated with your fingers?

1

Which mixtures can be easily separated with a magnet?