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Chocolate Melting Experiment

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Chocolate Melting Experiment

Investigate how warm water changes chocolate. Work with an adult, use warm—not boiling—water, and keep the chocolate sealed in its bag. Do not eat the chocolate used in the experiment. Record what you observe; your results may differ from the example answers.

Plan the investigation

You will need a small piece of chocolate, a sealed zip-lock bag, a bowl, warm water and a timer. Place the chocolate in the bag and seal it. Put the bag in the bowl, then carefully add warm water around it. Check the chocolate every minute for up to five minutes. Keep the bag closed.

1.Before you begin, predict what will happen to the chocolate in the warm water. Explain what makes you think so.

2.At the start, describe the chocolate’s appearance and state of matter. Choose the best state.

3.What should you change in this investigation, and what should you keep the same to make it a fair test?

4.Record what you observe at the beginning, after about two minutes, and after about five minutes. If your chocolate changes at a different speed, write your real observations.

5.Which word names the change from solid chocolate to liquid chocolate?

Freezing
Melting
Evaporation
Condensing

6.Complete the explanation: The warm water transfers to the chocolate. The chocolate changes from a to a .

7.True or false? The chocolate melts because it gains heat from its warmer surroundings.

TrueFalse

8.Imagine the sealed bag is taken out of the warm water and left somewhere cool. What might happen to the chocolate, and what is that change called?

9.A class tests two identical pieces of chocolate. One goes into warm water and one stays on the bench. Which is the comparison sample, and why is it useful?

10.Name one other material that can melt when it gains heat, and describe what it changes from and to.

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Year 5

Chocolate Melting Experiment

Chocolate Melting Experiment

Plan the investigation

2 printable pages

About This Worksheet

Free in Kuraplan

Print-Ready

AI-Generated

For Teachers & Parents

Need a custom version of this worksheet?

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