Choose the correct descriptions for a gas:

Their particles are not held together at all.

Their particles are free to move.

Their particles can roll over one another.

7 States Of Matter

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Kathryndoyle

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1/12 Questions

Oxygen is an example of a gas.
- True
- False

About This Quiz

Year 7 Science test in the area of states of matter, particle theory and properties of water

2.

All matter is made up of tiny particles.
- True
- False
Correct Answer

A. True

Explanation

This statement is a fundamental concept in the field of science. It is widely accepted that all matter, whether it is solid, liquid, or gas, is composed of tiny particles called atoms and molecules. These particles are too small to be seen with the naked eye, but they make up everything around us. This understanding of matter has been supported by numerous scientific experiments and observations, making the statement "All matter is made up of tiny particles" true.

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1
3.

A force can be a
- Push
- Pull
- Twist
- All of the above
Correct Answer

A. All of the above

Explanation

The correct answer is "all of the above" because a force can be a push, a pull, or a twist. A push is a force that moves an object away from the person applying the force. A pull is a force that moves an object towards the person applying the force. A twist is a force that causes an object to rotate or turn. Therefore, all three options are valid examples of forces.

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1
4.

When a liquid changes to a gas this process is occuring?
- Condensation
- Evaporation
- Freezing
- Melting
Correct Answer

A. Evaporation

Explanation

Evaporation is the process by which a liquid changes into a gas. It occurs when the molecules of a liquid gain enough energy to overcome the attractive forces between them and escape into the surrounding environment. This process is commonly observed when water evaporates and turns into water vapor. It is different from condensation, freezing, and melting, which involve the conversion of a gas to a liquid, a liquid to a solid, and a solid to a liquid, respectively.

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3
5.

Liquids do not move well because their particles are held together strongly.
- True
- False
Correct Answer

A. False

Explanation

Solids do not move well because their particles are held together strongly.

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1
6.

When water changes from a solid to a liquid the molecules
- Expand
- Contract
- Shrink
- Link up closer
Correct Answer

A. Expand

Explanation

The molecules expand because heat energy is added.

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2
7.

If an object is less dense than water, it will sink in water.
- True
- False
Correct Answer

A. False

Explanation

If an object is less dense than water, it will FLOAT in water.

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1
8.

The skin that is created on the surface of water is called buoyancy.
- True
- False
Correct Answer

A. False

Explanation

The skin that is created on the surface of water is called SURFACE TENSION.

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2
9.

You need mass and weight to calculate the density of an substance.
- True
- False
Correct Answer

A. False

Explanation

You need mass and VOLUME to calculate the density of an substance.

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3
10.

Choose the correct descriptions for a gas:
- Their particles are not held together at all.
- Their particles can roll over one another.
- Their particles are free to move.
Correct Answer(s)

A. Their particles are not held together at all.
A. Their particles are free to move.

Explanation

Their particles can roll over one another is an example of a liquid.

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4
11.

Forces in science can be represented by ____________________.

Correct Answer(s)
arrows
arrow

Explanation
Forces in science can be represented by arrows because arrows are a common visual representation used to depict the direction and magnitude of a force. Arrows allow scientists to easily communicate the size and direction of a force in a clear and concise manner. By using arrows, scientists can visually represent the forces acting on an object and analyze the resulting motion or equilibrium. The length and direction of the arrow indicate the magnitude and direction of the force, respectively. Therefore, arrows are an effective way to represent forces in science.

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2

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Current Version
Mar 21, 2023

Quiz Edited by
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Nov 06, 2012

Quiz Created by
Kathryndoyle

7 States Of Matter

Oxygen is an example of a gas.

Quiz Preview

All matter is made up of tiny particles.

A force can be a

When a liquid changes to a gas this process is occuring?

Liquids do not move well because their particles are held together strongly.

When water changes from a solid to a liquid the molecules

If an object is less dense than water, it will sink in water.

The skin that is created on the surface of water is called buoyancy.

You need mass and weight to calculate the density of an substance.

Choose the correct descriptions for a gas:

Forces in science can be represented by ____________________.