It's all around us and we need it to survive. What is it? Air! Air really seems to be weightless...or is it? That's what we had to find out. In today's lab, students investigated how much, if anything, air weighed. They performed the lab from pages 2-6 and 2-7 and discovered that air does, in fact have mass, albeit VERY VERY little. They discovered this by forcing (pumping) small amounts of air into a sealed 2-liter bottle and measuring the change in mass from the empty bottle.
No homework was assigned.
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