The HX Blog

Okay, maybe it's not cold yet, but it's certainly less hot! And on some particularly cool mornings, we'll be seeing an interesting effect on balloons. At the risk of sounding a little too scientific, let's explain. The Science In short, balloons will appear to shrivel up in the cold while they tend to expand in the heat. The reason is due to a density change of the molecules. (We warned you things may get a little scientific!) Cold weather makes the molecules more dense, which causes them to move around more slowly and within a smaller space. Because latex balloons are elastic, they will appear to "shrink" in extreme cold as the latex gives way to the smaller area of movement within. Foil balloons do not have the elasticity latex balloons do, but will appear to shrivel up as the foil around the unused space crinkles upon itself. As you can probably already guess, heat has the opposite effect. In this case, the molecules become less dense and begin to move...