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Stage 1
Answer 4 questions correctly in a row.

Jon is using a wet rag to wipe down the countertops in his kitchen. He notices that the rag seems to dissolve substances and clean better when he wets the rag with hot water. Jon wonders what factors affect the rate at which water can dissolve a substance. He has the following supplies available:

tap water
two heat-safe bowls
two spoons
sugar
a hot plate
a refrigerator
a stopwatch

Using only these supplies, which two questions can Jon investigate with an experiment?

Does tap water heated on a hot plate dissolve sugar faster than it dissolves salt?

Does tap water heated on a hot plate dissolve sugar faster than tap water chilled in a refrigerator does?

Does tap water dissolve sugar faster when it is stirred with a spoon?

Does sugar dissolve faster in tap water or distilled water?

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A.1The process of scientific inquiry