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Chemistry 🌷 > Changing state & kinetic theory🌷 > Flashcards

Changing state & kinetic theory🌷 Flashcards

1
Q

What is the kinetic theory of matter?

A

The kinetic theory of matter states that all matter is made up of tiny particles that are in constant motion.

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2
Q

True or False: The kinetic energy of particles increases with temperature.

A

True

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3
Q

Fill in the blank: In solids, particles are _______ packed together and vibrate in place.

A

closely

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4
Q

What happens to the particles in a substance when it is heated?

A

The particles gain kinetic energy and move faster.

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5
Q

Multiple Choice: Which state of matter has a definite shape and volume? A) Gas B) Liquid C) Solid

A

C) Solid

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6
Q

What is the process called when a solid turns into a liquid?

A

Melting

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7
Q

True or False: Gases have a definite volume.

A

False

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8
Q

Fill in the blank: The temperature at which a liquid turns into a gas is called its _______.

A

boiling point

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9
Q

What is condensation?

A

Condensation is the process by which a gas turns into a liquid.

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10
Q

Multiple Choice: Which of the following involves a change of state? A) Heating B) Cooling C) Both A and B

A

C) Both A and B

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11
Q

True or False: In liquids, particles are free to move but remain close together.

A

True

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12
Q

What is sublimation?

A

Sublimation is the process where a solid changes directly into a gas without becoming a liquid.

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13
Q

Fill in the blank: The change from gas to solid is known as _______.

A

deposition

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14
Q

What is the relationship between particle motion and temperature?

A

As temperature increases, particle motion increases.

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15
Q

Multiple Choice: Which state of matter has the most kinetic energy? A) Solid B) Liquid C) Gas

A

C) Gas

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16
Q

True or False: The particles in a gas are packed closely together.

A

False

17
Q

What are the three common states of matter?

A

Solid, liquid, gas

18
Q

Fill in the blank: The change from liquid to solid is called _______.

A

freezing

19
Q

What occurs during the melting process?

A

The solid absorbs heat and its particles gain energy, allowing them to move more freely.

20
Q

Multiple Choice: Which process involves the removal of heat? A) Melting B) Freezing C) Boiling

A

B) Freezing

21
Q

True or False: The kinetic theory can explain the behavior of gases in terms of particle motion.

A

True

22
Q

What is thermal energy?

A

Thermal energy is the total kinetic energy of all the particles in a substance.

23
Q

Fill in the blank: The change from solid to gas is called _______.

A

sublimation

24
Q

What is the effect of pressure on the state of matter?

A

Increasing pressure can force a gas to become a liquid.

25
Q

Multiple Choice: Which state of matter has the least kinetic energy? A) Solid B) Liquid C) Gas

A

A) Solid

26
Q

True or False: During boiling, a liquid’s temperature remains constant.

A

True

Chemistry 🌷 (9 decks)

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