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In this chemistry activity, learners will explore the concept of entropy. When learners stretch and unstretch a balloon, they will notice a change in temperature.

1 cent - $1 per student Ages 8 - 11 5 to 10 minutes
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In this activity, learners will experiment with salt and ice in order to turn a bag of ingredients into ice cream.

$5 - $10 per group Ages 6 - adult 5 to 10 minutes