The temperature of the solvent may affect the rate at which a material dissolves. For this experiment, both boys chose to measure the candy canes before they started and they both drew the jars of liquid. • dissolving solutes in water, e.g. He decided to use just one type of sugar in these experiments. 5. Also, because a molecule of sugar is much larger than a sodium or chlorine atom, fewer molecules are found in a teaspoon of sugar than salt, leaving fewer molecules to be pulled into solution. The topic of this project is to find out whether sugar dissolves faster in warm or cold water. As with all of our experiments we began with observations and predictions. Science - 2nd Grade Immediately record the time at which the water was added on a data chart similar to the one shown in the next section, "Keeping Track of Your Experiment." Experiment 2 Bob decided to look at the dissolving times of sugar at different temperatures. Sugar dissolves faster in hot water than it does in cold water because hot water has more energy than cold water. Make sure the glasses have an equal amount of water. There are numerous solids that dissolve in water, for example, Sugar, Coffee and Salt all dissolve in water, and usually will dissolve faster in much hotter water. Repeat this process (remembering to count the amount of sugar cubes you put into the water) until the sugar stops dissolving, you are at this point when sugar starts to gather on the bottom of the glass rather than dissolving. google_ad_width = 160; This makes it more difficult to form a hypothesis, but don't worry. Their findings are presented to the class and placed on a science fair project board for the school science fair. More Dissolving Experiments //-->. If your students enjoyed this dissolving experiment, they may enjoy Why Soap Works Experiment KS2 and KS2 Food Science Experiment Activity Pack. A mixture called a solution is made when a solid disappears into a liquid. This easy experiment shows that you can only dissolve a certain amount and that this changes as the water gets hotter.