What do you think would happen to elodea cells if they were left in a glucose solution for hours.?

I am a IB student. This is from IB Bio Hl. WE did a lab in which under a microscope we placed a leaf from a elodea plant. We then added glucose and had to figure out what happened. Then we used distilled water to wash the glucose and had to note what happened when we added distilled water. We repeated the experiment using sodium. I'm not very good and Biology and that question is part of my lab. Any help would be appreciated.