States of Matter

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Q1. Which of the following processes involves a change from gas to liquid?

Solution:

Condensation is the process where gas changes to liquid.

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Q2. What is the primary characteristic of gases? (2023)

Solution:

Gases are highly compressible due to the large spaces between particles, allowing them to occupy more volume when pressure is applied.

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Q3. What is the primary difference between liquids and gases? (2023)

Solution:

Gases are highly compressible while liquids are not, due to the distance between particles in each state.

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Q4. What is the primary reason that gases can be compressed more than liquids or solids?

Solution:

Gases can be compressed more than liquids or solids because they have large intermolecular spaces.

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Q5. Which gas law relates pressure and temperature of a gas at constant volume?

Solution:

Gay-Lussac's Law states that the pressure of a gas is directly proportional to its temperature at constant volume.

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Q6. Which of the following is NOT a characteristic of solids? (2023)

Solution:

Solids are not highly compressible; they have a definite shape and volume, and their particles vibrate in fixed positions.

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Q7. What happens to the volume of a gas when its temperature increases at constant pressure? (2020)

Solution:

According to Charles's Law, the volume of a gas increases with an increase in temperature at constant pressure.

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Q8. Which of the following best describes the arrangement of particles in a liquid? (2023)

Solution:

In liquids, particles are close together but can move past each other, allowing liquids to flow.

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Q9. What is the primary reason for the high compressibility of gases?

Solution:

Gases are highly compressible due to large intermolecular spaces between particles.

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Q10. What is the term for the energy required to change a substance from solid to liquid?

Solution:

The heat of fusion is the energy required to change a substance from solid to liquid.