When sugar is added to a glass of water, it dissolves. How do you know this?

Use a spoon, scoop up a small amount of the syrup. When you do, you won't be able to see any sugar crystals in the liquid which is water.

OK so, "question" 1 and 2 are an example question of the relationship between mass, volume, and density and they work you through the problem and answer it for you so... you should probably probably just read it.