thermochemistry II

We had a several experiments which were related to thermochemisty.

We boiled the ice cube and change the state of matter. We kept watch the temperature of the substance until it disappered into gas. It increased the temperature when they don't change the matter but it stayed constant when they changed the state of matter.

We also had elephant toothpaste experiment. I really wanted to see this since I saw the video. It was really cool. It just turned yellow and popped up with high temperature.

We also did alot of thermochemistry problems. It was pretty difficult to find all the temperature and add all up when there are cold and hot water which become solid to liquid to gas. There are many formulas you can use while you solve them, like latent heat of vapor and fusion of water. Latent Heat of Fusion of Water is 80cal/g and Latent Heat of Vaporization is 540 cal/g.