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Melting Ice

based on 34 ratings

Grade Levels:
K-3

Question:
Will salt make ice melt faster?

Possible Hypotheses:
Salt will/will not make ice melt faster.

Materials:
Four ice cubes – the same size
Four small plastic cups
Salt

Procedure:

  1. Place one ice cube in each cup.
  2. Sprinkle one teaspoon of salt into one cup (S), two teaspoons on salt into another (SS), and three teaspoons of salt into a third (SSS). The fourth cup will be your control (C). Mark the cups as shown in the brackets.
  3. Place the cups in a sunny place and observe.

Analysis and Conclusion:
Which ice cube melted fastest? Did salt make the ice melt faster? On an icy day, how could you make your driveway safer?

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