Demonstrate forces of adhesion and cohesion and equilibrium density. Explain that if the pressure on a gas decreases, the gas will expand. Measure the volume of CO 2 in a bottle of soda pop. Explain the effects of various temperatures on the solubility of carbon dioxide.
Place raisins in beaker, pour colored seltzer water into the beaker.
Into a second beaker containing seltzer water, place pieces of broken spaghetti. Into a third beaker of seltzer water, place 8 kernels of popcorn. Remove the cap from a bottle of cold carbonated beverage. Quickly place a balloon over the mouth of the bottle and seal tightly with tape. Shake the bottle briefly.