Today Sam buttered his toast while it was still hot (a rare occasion) and was very excited to see that it melted. A lively discussion about things that melt broke out. Everyone had something to add to the list of melting things (except Abby, who was just happy to be with us all). Sam said that sugar was his favorite thing that melts. Then I asked if sugar melts or dissolves. Sam put sugar on his toast and placed it in the light of a sunbeam. Sam and Grace observed the sugared toast. Meanwhile, Mom and Dad continued debating the melt vs. dissolve issue and researched it online. (Sugar dissolves, by the way. See the info. below.)
Sam and Grace wanted to try out melting experiments. We filled plastic tubs with water and a few toys and placed them into the freezer. Tomorrow the experiments continue.
What's the Difference between "Dissolving" and "Melting"?
"When a solid dissolves into a liquid, it does not melt since no heat has to be added. It does not change phase, but simply gets broken apart into invisible pieces that are mixed into the liquid. In order to melt a solid, heat must be added to raise its temperature above its melting point, and no other substance is added." www.buhs.k12.vt.us/science/physicalscience
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