Mixtures vs. Solutions
What is the difference between a mixture and a solution?
A mixture is made of parts that are combined but not dissolved, while a solution is where one substance dissolves evenly into another.
In salt water, what is the solvent?
Water
Name one way you could separate sand and water.
Filtering, using a strainer, decanting, or letting the layers separate naturally.
Is lemonade a mixture or a solution?
Solution
What does density mean?
Density is how heavy something is compared to its size.
Trail mix is a mixture, not a solution. Why?
Its parts do not dissolve and can be separated easily.
In salt water, what is the solute?
Salt
Why is it harder to separate a solution than a mixture?
Because the solute has dissolved into the solvent, so you can’t separate them by hand.
Is salad dressing a mixture or a solution? Explain.
Mixture (oil + vinegar separate naturally)
Why does oil float on top of water?
Oil floats on water because it is less dense and its particles don’t mix well with water.
What happens to substances in a solution that does NOT happen in a mixture?
In a solution, one substance dissolves completely into another; in a mixture, the substances stay separate.
In sugar water, what dissolves?
Sugar
How could you separate oil from water?
Let the oil float to the top and carefully pour it off, or use a separatory funnel.
Is hot chocolate a mixture or a solution?
Solution
If you add sugar to water and stir, why can’t you see the sugar anymore?
The sugar dissolves into the water, so the particles are evenly mixed and no longer visible.
True or False: All mixtures are also solutions.
False. Not all mixtures are solutions.
Which word describes the substance that does the dissolving—solute or solvent?
Solvent
True or False: You can separate saltwater with a strainer.
False. A strainer can’t separate dissolved salt from water.
Name one example of a mixture and one example of a solution from your lunchbox.
Example answers may vary: sandwich = mixture, lemonade = solution.
Create your own example of a mixture AND a solution.
Example answers may vary: mixture = salad, solution = salt water.