Investigation 3

What is

concentration?

Investigation 3

Concentration

Dilute

Volume

Global warming

Saturated Solution

Soft-Drink Investigation

It’s party time…

Our first challenge will be to find out how much powder I should mix with 1000ml of water to make a good-tasting drink.

Is the soft drink a mixture?

Is the soft drink a solution?

How could you test to determine if it is solution?

Soft-Drink Investigation

How would you know if you had made a saturated soft-drink solution?

Lets take a look at solutions 1 and 2

List all the ways that solutions 1 and 2 are the same and different.

Ingredients, appearance, and taste.

1 2

Soft-Drink Investigation

Concentration

Which soft-drink solution tasted sweeter?

When a soft-drink solution tastes sweet (and looks dark), it is a concentrated solution.

When it tastes weak (and looks light), it is a dilute solution.

Soft-Drink Investigation

Lets take a look at solutions A and B

A B

Soft-Drink Investigation

Concentration refers to the amount of material dissolved in a measure (volume) of liquid. The more material dissolved in a given amount of liquid, the more concentrated the solution.

What happens to the soft-drink solution when you increase the amount of powder in a given amount of water?

Soft-Drink Investigation

Content/Inquiry

What happens to the soft-drink solution when you increase the amount of powder in a given amount of water?

Cooperation Animal Creation

Inquiry

Investigation 3 Part 2Salt Concentration

How do you make a concentrated soft-drink solution? A dilute soft-drink solution?

How can you tell which of tow soft-drink solutions is more concentrated?

What are some other solutions that vary in concentration?

Investigation 3 Part 2Salt Concentration

Today we are going to investigate the concentration of salt solutions. But there’s a problem, we are not permitted to taste salt solutions, and they are colorless.

How can you determine which salt solution is more concentrated?

Can you use a balance to determine concentration?

Investigation 3 Part 2Mystery Solutions

Do these three solutions have different concentrations?

In your groups, you will plan a step-by-step procedure for solving the concentration mystery.

Your going to write your plans in your journals.

Investigation 3 Part 2Mystery Solutions

Getters #1 get three cups

Label the cups by their color

Transfer 50 ml of each solution into a labeled cup.

Let the sleuthing begin!!

What did your group decide??

PROJECTS

GROUPS NEED TO DECIDE WHAT THEY WILL BE PRESENTING.

Creative Animal Creation