Our classes worked with balloons to learn a little more about our last state of matter: Gas. We demonstrated that air does have mass (a balloon without air weighs 2.5 grams whereas a balloon with air weights 3.0 grams!)
We also demonstrated that air molecules are impacted by cooling or heating, as we learned last class! We measured the circumference of a balloon, and then placed it out in freezing temperatures...Our balloon decreased 2 centimeters in 7 minutes! WOW!
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