Show model answer and explanation
water
Ice and liquid water are the same substance in different states.
Class 2 · English Medium · Cambridge · General science
Materials and simple changes
Explore materials and simple changes with an example and your own answers.
Original Kidemy foundation practice · Read the example, write your answers, then check. This starter is shared across class versions; it is not a complete board-specific lesson or course.
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Learn the idea
A material can change shape without becoming a new material. Some changes can be reversed; others are difficult to reverse.
Worked example
Fold paper into a fan and unfold it. The paper remains paper. Ice can melt into liquid water.
- Read the example and explain which rule or evidence it uses.
- Try each task yourself, then compare the answer and its reason.
Your written practice
Show your working on paper and enter your answer here. If it does not match, compare the model and try again.
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yes
Changing its shape does not make a new material.
Show model answer and explanation
unfolding paper
A fold can be opened; burning changes the material.
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