Density Experiments

Today, we learned about density and buoyancy - We investigated Coca-Cola and Diet Coke to find the differences and tried to figure out why Coke sinks while Diet Coke floats!


It all has to do with density and buoyancy. If an object is less dense than the liquid it's been placed in, it will float. If it is more dense, it will sink. The regular Coke is more dense than the Diet Coke because of the sugar that is in the Coke. Sugar is more dense than the chemical substitute.



Then, we tried to see if an egg would float in water mixed with salt, sugar, or flour. A lot of the groups had trouble getting it to float in any of the substances, but some groups did a good job of dissolving the salt and were able to get the egg to float. The egg floated about halfway up the cups that were mixed with flour. We learned that flour is more dense than sugar, but salt is more dense than both of them.