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Prepared by: learnloophq@gmail.com

Last edited 26 days ago by Learn LoopHQ.

Answer key

Chapter: 01. Matter

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Matter - Practice Exam

Total Marks: [Suggest 30-40, depending on detail of answers]

Instructions:

Read each question carefully.

Answer all questions to the best of your ability.

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Section A: Multiple Choice Questions (MCQs)

Choose the best answer for each question.

Anything that has mass and occupies space is known as: a) Energy b) Light c) Matter d) Sound

Which of the following is the smallest possible unit of matter that shows all its properties? a) Molecule b) Atom c) Particle d) Cell

The space between molecules of a substance is called: a) Atomic gap b) Intermolecular space c) Molecular force d) Volume space

Which state of matter has a fixed volume but no fixed shape? a) Solid b) Liquid c) Gas d) Plasma

Gases can be compressed very easily because they have: a) Strong intermolecular forces b) Fixed volume c) Large intermolecular spaces d) Closely packed molecules

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Section B: Fill in the Blanks

Complete the following sentences with the correct word(s).

The amount of matter contained in an object is called its _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Atoms can combine to form _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The force of attraction between two neighbouring molecules is also known as _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Solids cannot flow, but _ _ _ _ _ _ _ _ _ _ _ _ _ _ and _ _ _ _ _ _ _ _ _ _ _ _ _ _ can.

When a gas is exposed to extremely high temperature, it can change into _ _ _ _ _ _ _ _ _ _ _ _ _ _.

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Section C: True or False

Write ‘True’ if the statement is correct and ‘False’ if it is incorrect.

Heat and light are forms of matter.

The greater the intermolecular space, the stronger will be the intermolecular force of attraction.

Liquids can be compressed easily, just like gases.

Oxygen and carbon dioxide are examples of gases.

Democritus proposed that particles of matter cannot be divided.

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Section D: Short Answer Questions

Answer the following questions in one or two sentences.

What are the two common properties of all matter?

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

Why do liquids take the shape of their container?

Define diffusion.

How does temperature affect the rate of diffusion?

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Section E: Diagram-Based Questions

Observe the diagram and answer the questions that follow.

Image Description: A simple illustration showing a tightly sealed balloon inside a plastic bottle, with the balloon partially inflated but not filling the entire bottle. An arrow points from the balloon’s opening stretched over the bottle’s neck.

{

"image_description": "A tightly sealed balloon inside a plastic bottle, with the balloon partially inflated but not filling the entire bottle. An arrow points from the balloon's opening stretched over the bottle's neck.",

"style": "simple diagram, clear lines",

"elements_to_include": ["plastic bottle", "partially inflated balloon inside", "balloon opening over bottle neck", "arrow showing connection"],

"keywords_for_ai_generator": ["air occupies space experiment", "balloon in bottle diagram", "gas volume demonstration"]

}

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What state of matter is primarily demonstrated by this experiment?

Why does the balloon not inflate completely to fill the entire bottle, even when you blow air into it?

What common property of this state of matter does this experiment prove?

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Section F: Long Answer Questions

Answer the following questions in 4-5 sentences.

Compare and contrast the molecular arrangement and intermolecular forces in solids, liquids, and gases.

Explain why an iron ball has more mass than a ball of cotton, even if the cotton ball occupies more space.

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