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Flashcards in Models Of Matter And Heat Transfer Deck (51):
1

What are substances made of?

Particles

2

What Substances have particles packed together?

Solids

3

Wha substances have the most energy?

Gases

4

Wha happens when a gas turns into a liquid?

Condensation

5

What happens when a liquid changes to solid?

Freezing

6

What happens when a solid turns into a liquid?

Melting

7

What happens when a liquid turns into a gas?

Evaporation

8

Solids: can you pour?

No

9

Solids: can you stir?

No

10

Solids: can you squash?

No

11

Liquids: can you pour?

Yes

12

Liquids: can you stir?

Yes

13

Liquids: can you squash?

No

14

Gases: can you pour?

No

15

Gases: can you stir?

No

16

Gases: can you squash?

Yes

17

What is diffusion?

The movement of small particles through air or water so that they are spread evenly

18

What do particles do in perfume when you spray it?

Move from an area of high concentration to low concentration

19

What are 3 states of matter?

Solids, liquids, and gases

20

What happens to particles when a solid melts?

They space out evenly and slide over eachother

21

What happens to pylons in the summer?

They heat up and arch down

22

What happens when water is heated?

It rises up

23

What is a solution?

The mixture after dissolving

24

What does dissolve mean?

When a substance is broken up by a liquid

25

What is a soluble?

A substance that can dissolve

26

What is an insoluble?

A substance that can’t be dissolved

27

What is a solvent?

The liquid being used to dissolve

28

What is a solute?

The solid substance being dissolved

29

What is a saturated solution?

When no more solute is able to dissolve it is a saturated solution

30

How much sugar will dissolve in to 20ml water?

About 14g

31

What is density?

The number of particles in a given volume

32

How much of the air is nitrogen?

79%

33

How much of the air is oxygen?

20%

34

What happens when a flame goes into hydrogen?

It pops and puts out the flame

35

What happens when a glowing stick goes into oxygen?

It relights

36

What happens when you put limewater into carbon dioxide?

It goes cloudy

37

What is melting point?

The temperature at which a solid turns into a liquid or vice-versa

38

What is boiling point?

The temperature at which a liquid turns into gas or vice-versa

39

How long does it take for ice to melt in water?

15 minutes

40

What is heat?

A type of energy

41

What is temperature?

A scale for measuring heat energy

42

What happens when particles get hot?

They have more energy

43

Put in order from hottest to coldest if you put it in boiling water:
Wooden splint
Aluminium
Iron
Brass

Iron
Wooden splint
Brass
Aluminium

44

What is conduction?

When heat energy is applied to particles and they move and vibrate

45

What are conductors?

Materials that pass on heat energy from atom to atom quickly

46

What are insulators?

Materials which pass on heat energy from atom to atom slowly or not at all

47

Name some conductors

Copper, steel, aluminium

48

What is convection?

Hot liquid or gas that rises

49

What is a convection current?

When liquid/gases heat up and rise up then when it cools it sinks down again

50

What is radiation?

The movement of heat energy in a wave called infrared, it doesn’t need particles

51

What contains heat the most?
Black can or silver can

Silver can