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Heating Crystals
Task with Student Directions
Contributed by: Assessment of Performance Unit (APU)

You have been given three solids in test tubes labeled P, Q, and R.

 

  1. Take test tube P and look carefully at the solid. Place the test tube in a holder and heat it for about a minute.

    Write down the changes you notice in the test tube.

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    Repeat these instructions for test tubes Q and R:

  2. Test Tube Q

    Changes during heating in the test tube:

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  3. Test Tube R

    Changes during heating in the test tube:

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  4. What do the changes for P, Q and R have in common with each other?

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Place all dirty test tubes in the container provided.

 


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