3rd Grade ICSE

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Answer key

Chapter: 07. Forms Of Matter Solids, Liquids And Gases

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Section A: Multiple Choice Questions (Choose the best answer)

What is anything that has mass and occupies space known as? a) Liquid b) Gas c) Matter d) Solid

Which of the following has a fixed shape and fixed size? a) Water b) Steam c) Juice d) Chair

Which form of matter takes the shape of its container and flows easily? a) Solid b) Liquid c) Gas d) Both liquid and gas

Oxygen is an example of which form of matter? a) Solid b) Liquid c) Gas d) Plasma

Which of these objects is a solid that we use for communication? a) Water b) Mobile phone c) Air d) Steam

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Section B: Fill in the Blanks

Everything around us is known as ...............................… .

Liquids do not have a fixed shape but take the …......................................... of the container.

Most gases cannot be …................................... .

Ice is a ….............................. form of water.

When you blow a balloon, it gets filled with ….............................. .

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Section C: True or False

All forms of matter can be seen. (True/False)

Sand is a liquid because it can be poured. (True/False)

Gases spread out to fill the entire space of the container they are in. (True/False)

A sharpener is an example of a liquid. (True/False)

Water exists in all three forms of matter. (True/False)

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Section D: Short Answer Questions

Define the term ‘matter’.

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List two characteristics of a liquid.

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Give two examples of solids that you use in your daily life.

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What is the main difference between how a liquid and a gas fill their container?

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Why is it important to drink plenty of water every day?

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Section E: Diagram-Based Question

Question 1

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Look at the diagram above. Identify the form of matter shown in each beaker (1, 2, and 3).

For beaker 3, why are the particles shown spread out everywhere, even though they are invisible?

Which beaker’s contents would change shape if you poured it into a different shaped container? Name all that apply.

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Section F: Long Answer Questions

Explain the main differences between a solid, a liquid, and a gas, focusing on their shape, size/volume, and ability to flow.

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Describe the balloon experiment from the chapter. What does this experiment tell us about air, even though we cannot see it?

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