Mixtures and Solutions Lab Activity

Your group will be designing a lab to determine the solubility of different substances, and what type of mixture that substance will make.

Mixtures and Solutions…..

1. Obtain samples 3 of the following substances: sugar, flour, powdered drink, baking soda, instant coffee, powdered sugar, baby powder, laundry detergent.

2. Hypothesis – Which of the above substances will make a homogeneous solution? Which of the above substances will make a heterogeneous mixture?

Mixtures and Solutions…..3. Design a lab to determine which of the

substances mixed in water form heterogeneous mixture and which form homogeneous solutions. You will also determine the amount of each substance required to make a saturated solution at room temperature.

Materials Available – O Temperature ProbeO WaterO BeakerO Spoon O Stirring stickO Scale

Mixtures and Solutions…..

4. Determine how much of each substance you can dissolve in samples of 100 ml of room temperature water. Add the substances a little bit at a time and keep track of the amount of each substance that dissolves in the water.

Mixtures and Solutions…..Using your knowledge of the properties of

mixtures and solutions, determine which substances formed homogeneous solutions and which were heterogeneous mixtures. Which substances dissolved to the greatest extent.

Record what you observed about each mixture once it achieved saturation.

Set up a data table to record your results.Make a graph showing the amount of each

substance that dissolved in 100 mL of water.