Molecules on the Move

Molecules on the Move Experiment GIF

Lab Safety

Always wear eye protection during science experiments. Never handle sharp objects, open flames, chemicals, or other dangerous objects without adult permission and supervision.

I promise! Signed, ___________________________________
In this experiment, we're going to learn about molecular motion and how it is affected by temperature.

Procedure

  1. Molecules on the Move Experiment Step 1
    Step 1

    Fill each of the drinking glasses to about the halfway point, one with hot water and the other with cold water. Alternatively, if you like, you can try this experiment with more glasses and a range of different temperatures.

  2. Molecules on the Move Experiment Step 2
    Step 2

    Put a single drop of food coloring in each glass, trying not to give any of them a head start (you can try using both hands or asking a labmate for help). And remember, don't stir!

  3. Molecules on the Move Experiment Step 3
    Step 3

    Carefully observe how the food coloring spreads throughout the water. Which one is spreading the quickest?

Lab Safety

Always wear eye protection during science experiments. Never handle sharp objects, open flames, chemicals, or other dangerous objects without adult permission and supervision.


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