Chemistry

Question 1

What state is a substance if it’s particles are NOT touching and are always moving?

Answer 1

Gas

Question 2

What state is a particle in if it can touch each other but can move past each other?

Answer 2

Liquid

Question 3

What particle state is much more spread out?

Answer 3

Gas

Question 4

What particle state can match the shape of a container?

Answer 4

Liquid

Question 5

Do crystalline solids have a regular repeating pattern or a disrupted arrangement?

Answer 5

Repeating pattern

Question 6

What is an amorphous solid?

Answer 6

A disrupted arrangement that particles are associated and hold their shape

Question 7

What is a crystalline solid?

Answer 7

A regular, ordered, repeating pattern that forms a solid lattice

Question 8

True or False: Gas particles touch

Answer 8

False

Question 9

What particle state is arranged in a regular pattern of lines and rows?

Answer 9

Solid State

Question 10

What particle state are arranged randomly?

Answer 10

Liquid State

Question 11

True or False: Solid particles vibrate on the spot

Answer 11

True

Question 12

What is condensation?

Answer 12

A change of state from a gas to a liquid

Question 13

How does condensation happen?

Answer 13

When you cool down a gas and reduce the energy of it’s particles

Question 14

What is boiling?

Answer 14

A change from liquid to gas

Question 15

How does boiling happen?

Answer 15

When liquid particles are heated, making them move faster and faster

Question 16

What is the end result of boiling?

Answer 16

Particles move quickly without touching turning to gas

Question 17

What is freezing?

Answer 17

When a liquid turns into a solid

Question 18

How does freezing happen?

Answer 18

Cooling down a liquid until the particles slow down, vibrating close together, making the particle arrangement into a solid

Question 19

What is melting?

Answer 19

A change from a solid to a liquid

Question 20

How does melting happen?

Answer 20

When the solid particles get extra energy, making them vibrate faster and faster to break away from it’s fixed position. Making them move freely over each other, turning into a liquid

Question 21

What is evaporation?

Answer 21

A change from liquid to gas

Question 22

What is the difference from evaporation and boiling?

Answer 22

Evaporation can happen at any temperature

Question 23

Why does evaporation happen?

Answer 23

Different particles in a liquid have different amounts of energy

Question 24

What happens in evaporation, when the particles gain enough energy to break free?

Answer 24

The physical state will become a gas

Question 25

What physical state changes from a gas to a liquid?

Answer 25

Condensation

Question 26

What state can change from a liquid to a solid?

Answer 26

Freezing

Question 27

What are the disadvanteges of the simple sphere model?

Answer 27

- Forces between particles not shown - Shows particles as spheres - Shows particles as solids

Question 28

Can solids be compressed?

Answer 28

Solids cannot be compressed because the particles are already as close it can get

Question 29

Can liquids be compressed?

Answer 29

Generally not, but if forced enough it can be compressed a tiny bit

Question 30

Can gases be compressed?

Answer 30

Can be easily compressed

Question 31

Why can gases be easily compressed?

Answer 31

There are large spaces between the particles

Question 32

Can gases change shape?

Answer 32

They can change shape and fit their shape to any container or space

Question 33

Can liquids change shape?

Answer 33

It can flow and change shape to fit any shape of a container

Question 34

Can solids have a fixed shape?

Answer 34

If you put them in another container they will not change making it a fixed shape

Question 35

What is the symbol (s) used for?

Answer 35

solids

Question 36

What is the symbol (I) used for?

Answer 36

pure liquids

Question 37

What is the symbol (aq) used for?

Answer 37

aqueous solutions (substances dissolved in water)

Question 38

What is the symbol (g) used for?

Answer 38

Gases

Question 39

What is vapor pressure?

Answer 39

When a liquid vaporizes in a closed container, gas molecules cannot escape

Question 40

What is intermolecular forces?

Answer 40

Broken during vaporization