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2 Helium Balloons
5j Gases and Balloons
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12-inch balloons 250-milliliter half-pint accelerometer adult to help air inside air pressure air resistance Ask an adult balloon car balloon filled balloon floats balloon rocket balloon sink Bernoulli's principle bicycle tire pump birthday candle blow bubble burn carbon dioxide charged balloon chest cavity clear flask clear plastic cold water cold-water balloon cooking oil dense than air dense than water diaphragm empty equal volume fill a balloon flask or bottle floating strength fluid food coloring gases gauge glass rod helium-filled balloon hot water hot-air balloon hydrogen leaks less dense loon lung air marking pen modeling clay mouth move object oblong balloon oven gloves pail paper clips plastic drinking straw push Puzzler release Repeat the experiment repel rise rubber rod rubbing alcohol Science Principle seal seltzer tablets shown in Figure sink or float soda straw strip tape temperature terminal velocity test your prediction tube twistie weight