Particle Model Of Matter

Question 1

What is the particle model of matter?

Answer 1

The particle model of matter describes how all matter is made up of tiny particles that are in constant motion.

Question 2

True or False: Solids have a fixed shape and volume.

Answer 2

True

Question 3

Fill in the blank: In liquids, particles are _______ packed than in solids.

Answer 3

less

Question 4

What state of matter has particles that are far apart and move freely?

Answer 4

Gas

Question 5

What do we call the energy that particles possess due to their motion?

Answer 5

Kinetic energy

Question 6

Multiple Choice: Which of the following states of matter has the highest density?

Answer 6

Solid

Question 7

True or False: Gases can be compressed easily.

Answer 7

True

Question 8

What happens to the motion of particles when a substance is heated?

Answer 8

The motion of particles increases.

Question 9

Fill in the blank: The process of a solid turning directly into a gas is called _______.

Answer 9

sublimation

Question 10

What is the arrangement of particles in a solid?

Answer 10

Particles are closely packed in a fixed arrangement.

Question 11

Multiple Choice: Which state of matter has a definite volume but no definite shape?

Answer 11

Liquid

Question 12

True or False: In a gas, particles are arranged in a fixed structure.

Answer 12

False

Question 13

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

Answer 13

Latent heat of fusion

Question 14

Fill in the blank: The process of a liquid turning into a gas is called _______.

Answer 14

evaporation

Question 15

What is the effect of increasing temperature on the kinetic energy of particles?

Answer 15

It increases the kinetic energy.

Question 16

Multiple Choice: Which of the following describes the motion of particles in a liquid?

Answer 16

Particles can slide past each other.

Question 17

True or False: The particle model can explain changes of state such as melting and boiling.

Answer 17

True

Question 18

What is the primary reason gases can fill any container?

Answer 18

Particles are far apart and move freely.

Question 19

Fill in the blank: When a gas cools, its particles _______ and move closer together.

Answer 19

slow down

Question 20

What happens to the spacing of particles when a substance is compressed?

Answer 20

The spacing between particles decreases.

Question 21

Multiple Choice: In which state of matter do particles have the least kinetic energy?

Answer 21

Solid

Question 22

True or False: The particle model applies to both pure substances and mixtures.

Answer 22

True

Question 23

What is the term for the energy required to change a substance from liquid to gas?

Answer 23

Latent heat of vaporization

Question 24

Fill in the blank: The process of gas turning into a liquid is called _______.

Answer 24

condensation

Question 25

What is the main characteristic of plasma as a state of matter?

Answer 25

It consists of ionized particles and conducts electricity.

Question 26

Multiple Choice: What happens to a solid when it is heated?

Answer 26

It may melt into a liquid.