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solid
A stone keeps its shape.
Class 3 · English Medium · Pearson Edexcel · General science
Materials, solids, liquids and gases
Explore materials, solids, liquids and gases 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 solid keeps its own shape. A liquid takes its container's shape but has a definite volume. A gas spreads to fill the available space.
Worked example
A stone is solid, water in a cup is liquid, and air is a mixture of gases.
- 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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liquid
The water takes the cup's shape.
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gas
Gas particles spread through available space.
Take it further
Apply the idea in a new situation and explain your method. Open writing needs a guardian or teacher to review it.
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solid
Ice has a solid structure at suitable temperatures.
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liquid
A liquid changes shape without expanding to fill all available space.
Write in your own words. A guardian or teacher should review this response.
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An inflated balloon occupies more space than a flat one because air is inside.
Use an ordinary observation or drawing; no blowing or experiment is required.
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