1. Mixtures
&
Solutions

2. Essential Questions What is a mixture? What is a solution?
What is the difference between a mixture and a solution?
What substances are/are not soluble in water?

3. How many of you like trail mix?
In this trail mix you will see M&M’s, chocolate chips,
raisins, & nuts. If you like ONLY M&M’s, you can pick
out just the M&M’s. All of these ingredients can be
separated- which makes it a MIXTURE.

4. Mixtures Look at this salad- what makes this salad a mixture?
A mixture is two or more substances that are combined without changing any of them.
Look at this salad- what makes this salad a mixture?
You can separate all the ingredients:
Tomatoes, cucumbers, onions, lettuce,
and bean sprouts- and its still a salad.

5. Mixtures
The substances in a mixture aren’t permanently combined and their properties don’t change.
Items used in a mixture can be separated. Like in a pizza, if you don’t like pepperoni- you can pick them off- but it’s still a pizza!

6. Mixtures
Not all mixtures are solids- think of salt water. If you mix salt and water, it seems like you can’t separate them- but you can. If you boil water, the water evaporates leaving the salt behind.
Sand at the beach is also a mixture of small rocks, shells, and other materials.

7. Mixtures Everything can be separated into different parts.
This is what makes
it a mixture.

8. Solutions
Now that you have a solid understanding of what a mixture is, lets move on to solutions.
Think about making sweetened iced tea.

9. Solutions
A solution is two or more substances that are combined changing the original substance. You cannot separate the ingredients in a solution.
Solutions are actually a type of mixture
With iced tea, you cannot separate the tea (brown coloring) that’s been added to the water. You also cannot separate the sugar.

10. Remember, In a mixture- substances can be separated- Solutions can not!
(physical and chemical changes – read

11. if you added sand to water? Would it dissolve?
What Would Happen…
if you added sand to water? Would it dissolve?
No- Sand does not dissolve in water rather the particles fall to the bottom of the container. Sand in water is NOT a solution.

12. Solubility
You will see in today’s investigation that substances dissolve differently.
Solubility is the measure of how well one substance dissolves in another.
Ex. Salad Dressing- As you’ve already learned, oil and water cannot dissolve in each other. Oil is not soluble in water.
Same with sand- Sand is not soluble in water therefore the solubility is zero!

13. Let’s Review C. Which of these is a mixture? A. Apple B. Broccoli
C. Ham sandwich
D. Carrot stick C.

14. Let’s Review A. Which of these is a mixture? A. Pail of sand and soil
B. Copper wire
C. Ring of pure gold
D. Pinch of salt A.

15. Let’s Review B. Which of these is an example of a solution? Granola
B. Iced tea
C. Pizza
D. Salad B.

16. Name a substance besides sand and oil that are not soluble in water.
Let’s Review
Name a substance besides sand and oil that are not soluble in water.

17. Using a Venn Diagram, compare and contrast mixtures and solutions.
Let’s Review
Using a Venn Diagram, compare and contrast mixtures and solutions.
Mixtures
Solutions