Ch. 2: States Of Matter

Question 1

Solid, liquid, and gas. They are all made up of particles (atoms and molecules), but the speed in which the particles move is different in each state. Ex. Solid- slow, Gas- fast

Answer 1

States of matter

Question 2

The state of matter that has definite shape and matter

Answer 2

Solid

Question 3

Particles in a substance are…

Answer 3

Very close together, the attraction between them is stronger than in other states of matter

Question 4

What are two kinds of solids

Answer 4

Crystalline and amorphous

Question 5

Very orderly 3-D arrangement of particles that are in a repeating pattern of rows. Also a type of solid

Answer 5

Crystalline

Question 6

Particles do not have a special arrangement, each is in one place but not in a pattern. Also a type of solid

Answer 6

Amorphous

Question 7

State of matter that has a definite volume but takes the shape of the container

Answer 7

Liquid

Question 8

Liquids change…

Answer 8

Shape but not volume

Question 9

Force that acts on the particles at the surface of the liquid

Answer 9

Surface tension

Question 10

Liquids resistance to flow; affected by the strength of the attraction between the molecules

Answer 10

Viscosity

Question 11

Gases change…

Answer 11

In both shape and volume

Question 12

State of matter that has no definite shape or volume; particles move quickly- less attraction between particles. The amount of empty space between gas and particles change

Answer 12

Gas

Question 13

Measure of how fast the molecules are moving. The faster they move the more energy they have

Answer 13

Temperature

Question 14

Is the amount of space that an object takes up. With a gas, the volume depends on the container

Answer 14

Volume

Question 15

Increases when the amount of force per unit area increases

Answer 15

Pressure

Question 16

Temperature, pressure, and volume of a gas are all linked- if one changes, the other two factors change too

Answer 16

Gas behavior laws

Question 17

States the relationship between volume and pressure for a fixed amount of gas

Answer 17

Boyce’s law

Question 18

States that if the temperature increases, the volume increases. If the temperature decreases, the volume decreases

Answer 18

Charles’s law

Question 19

Change in a substance from one physical form to another

Answer 19

Change of state

Question 20

Examples of changes of state

Answer 20

Freezing, melting, evaporation, condensation, and sublimation

Question 21

The particles of a substance…

Answer 21

Move differently depending on the object

Question 22

The change from a solid to a liquid

Answer 22

Melting

Question 23

The temperature at which a substance changes from a solid to a liquid

Answer 23

Melting point

Question 24

To melt a solid, particles must overcome some of their attraction to each other

Answer 24

Adding energy

Question 25

Liquid to solid; change of state from a liquid to solid

Answer 25

Freezing

Question 26

The temperature at which a liquid changes into a solid

Answer 26

Freezing point

Question 27

For a liquid to freeze, the attraction must overcome the moment of the particles.

Answer 27

Removing energy

Question 28

Change of a substance from liquid to gas

Answer 28

Evaporation

Question 29

Change of a liquid to vapor

Answer 29

Boiling

Question 30

Boiling occurs when the pressure inside the bubbles equals the outside pressure on the bubbles

Answer 30

Vapor pressure

Question 31

Temperature at which a liquid boils

Answer 31

Boiling point

Question 32

No matter the amount of a specific substance…

Answer 32

The boiling point and the melting point of a substance will not change

Question 33

Change of state from a gas to a liquid, it is reverse of evaporation

Answer 33

Condensation

Question 34

Is the temperature at which the gas becomes a liquid

Answer 34

Condensation point

Question 35

Change of state in which a solid changes directly into a gas

Answer 35

Sublimation

Question 36

Evaporation, melting, and sublimation. Energy is added to make change

Answer 36

Endothermic change

Question 37

Condensation and freezing. Energy is removed to make change

Answer 37

Exothermic changes