Chocolate Bars

By Alisan Hoffman

The Main Idea:

Tim loves chocolate! He wants to do an experiment to see how long it for takes for different sizes of a chocolate bar to melt into a liquid. He'll be using a stove, chocolate bars, and a spoon to stir and test if it's melted all the way.
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The Info:

Question: How long will it take for different sizes of a chocolate bar to melt?

Hypothesis: If I see how long it takes to melt sizes of chocolate bars to melt, then the biggest will take the longest.

Independent Variable: Size of the chocolate bar

Dependent Variable: How much of the chocolate liquid is there

Constants: The temperature at which it melts, what type of chocolate bar, how much you stir the chocolate.

Control: There is no control