Students will be able to explain, on the molecular level, how the polar characteristic of water and sugar interact so that water dissolves sugar. Students will be able to identify and control the variables in their experiment. Students will also be able to explain why a nonpolar liquid, such as mineral oil, is not good at dissolving sugar ...
Because sugar is polar (having areas of positive and negative charge) and water is also polar, water is attracted to sugar molecules. Eventually, when enough water molecules surround a sugar molecule, a sugar molecule becomes more attracted to the water than it is to other sugar molecules. This is dissolving.
For example: When water (H 2 O) changes from solid ice to liquid water, that is a physical change. The chemical makeup (hydrogen and oxygen) is not altered. When salt and sugar dissolve in water it is a physical change. The chemical makeup of the salt and sugar are not changed.
Table sugar (C 12 H 22 O 11) is an example of a nonelectrolyte. The link below will connect you to an animation that illustrates the differences between ionic compounds (electroytes) and covalent compounds (non-electrolytes) dissolved in water.
Try this simple experiment: Take a small amount of room-temperature water. Add sugar a teaspoon at a time, and, as you go along, stir to dissolve the sugar. As you keep adding sugar, you will notice that a point will be reached where no more sugar can dissolve. The solvent, water, cannot hold any more of the sugar in solution.
To see all my Chemistry videos, check out http://socratic.org/chemistry We'll look at what happens when you dissolve ionic and covalent compounds in water. I...
After seeing an animation of water dissolving salt, students will compare how well water and alcohol dissolve salt. They will relate their observations to the structure of salt, water, and alcohol on the molecular level. Objective. Students will be able to explain, on the molecular level, why water can dissolve salt.
Dissolving sugar in water is an example of a physical change. Here's why: A chemical change produces new chemical products. In order for sugar in water to be a chemical change, something new would need to result. A chemical reaction would have to occur. However, mixing sugar and water simply produces... sugar in water!
dissolve. The water, alcohol, and oil are all different. The each liquid interacts with the sugar and the food coloring will make the colored sugar dissolve or not dissolve into the liquid. In this case water was a good dissolver of both the sugar and the coloring. Alcohol and oil may be good at dissolving some other things that water cannot ...
Chemistry B study guide by Graziana_Marziliano7 includes 209 questions covering vocabulary, terms and more. Quizlet flashcards, activities and games help you improve your grades.