Sooo the rock candy experiment. Probably the most done experiment during science fairs (something I wish my school had). It might not be a good idea to eat it though because ants, bugs and other stuff could've gotten in and it didn't taste that good when I tried it! (It was too sweet) What do you need for the experiment?1 cup of sugar 2 cups of water Something to heat the sugar solution up. Preferably a pot or a microwave 1 pencil/stick 1 string How do you do the experiment?
How does it work?When add as much sugar as you can dissolve into the water you create something called a saturated solution. A supersaturated solution is when there are more dissolved particles of the solute (sugar) than the solvent(water) can usually hold. This happens because when you boil the water the intermolecular forces, specifically the hydrogen bonds between the water molecules loosen up. When the water molecules "loosen up" this allows more space for the sugar molecules. When you cool the supersaturated solution down all the excess sugar particles are displaced and precipitates. The sugar that precipitated combines with the other sugar molecules. In this case the sugar molecules will most likely combine with the seed crystals which would make the crystals grow and grow. The sugar will continue to crystallize via a process called crystallization until you take the crystals out of the cup/jar or you break and sabotage your experiment.
0 Comments
Leave a Reply. |
Archives
June 2019
Categories |