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Science > Solids Liquids And Gas > Flashcards

Solids Liquids And Gas Flashcards

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0
Q

What is it called when Liquid changes to gas

A

Boiling

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1
Q

What is it called when gas changes to liquid?

A

Condensing

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2
Q

What is it called when a Solid changes to liquid

A

Melting

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3
Q

What is it called when Liquid changes to solid

A

Freezing

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4
Q

How do gas particles move if they are not evenly distributed

A

From areas of high concentration to areas of lower concentration

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5
Q

What do air particles do that causes air pressure

A

They move randomly and exert a force

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6
Q

What can be compressed?

A

Gases

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7
Q

Properties of solids (5)

A 
Fixed volume (at a fixed temperature)
Fixed shape
Cannot be squashed
Does not flow
High density (mass is greater then the same volume as other materials)
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8
Q

Properties of liquids (5)

A

Fixed volume (fixed temperature)
Not fixed shape (takes shape of bottom of container)
Cannot be Squashed
It can flow
Although dense, usually lower density then solids

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9
Q

Properties of gases (5)

A

Not fixed volume (at a fixed temperature)
Not fixed shape
Can be squashed
Flow- spread to fill container (from high conc to lower conc)
Very low density

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10
Q

What happens when you heat a gas?

What happens when you cool a gas?

A

Its volume increases (heated)

Its volume decreases (cold)

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11
Q

What are the 3 main types of mixtures

A

Solution
Suspension
Substances

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12
Q

What are colloids

A

They are substance mixtures
Although they appear to be a single component they are actually made up of a mixture of 2 separate things
They do not separate while standing
Any solid, liquid or gas combination gas the potential to produce a colloid.(except gas and gas which are totally mixable )

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13
Q

Example of liquid in gas colloid

A

Fog
Mist
Hairspray

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14
Q

Example of solid in gas colloid

A

Smoke

Cloud

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15
Q

Gas in liquid colloid

A 
Whipped cream (air in cream)
Shaving cream
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16
Q

Liquid in liquid

A

Milk
Mayonnaise
Hand cream

17
Q

Solid in liquid colloid

A

Blood

Ink

18
Q

Gas in solid colloid

A

Aero

Pumice

19
Q

Liquid in solid colloid

A

Jelly

Gelatin

20
Q

Solid in solid colloid

A

Cranberry glass

21
Q

Particles of a solid (3)

A

Fixed position
Very close together (so solids have high density and cannot be compressed)
Vibrate but not free to move

22
Q

Particles of a liquid (2)

A

Close but flow freely over each other

Only small gaps between particles (so liquids have relatively high density and cannot be compressed)

23
Q

Particles of a gas (5)

A

Furthest apart
Move randomly, freely quickly
Particles spread and fill a container
Particles move from high concentration to low concentration
Large gaps between particles (means gases have low density and gas mean gases can be compressed)

24
Q

What happens when a liquid cools

A

Contracts (size)

25
Q

What happens to a liquid when it’s heated

A

It expands (size)

26
Q

What happens to eg. Copper when heated (2)

A

It expands

When you add heat/energy the particles become further apart and the solid expands

27
Q

What happens to copper when it’s cooled

A

Contract

28
Q

The effect of heat on dissolving

A

Dissolving gets quicker.

The particle in the hot water have more energy and move faster than particulars in cold water
They collide with the crystal more often therefore it dissolves quicker (dissolved)

29
Q

How does heat travel down a metal rod

A

The heat energy passes from the heated end gradually down to the none heated end (rod, wax and paper clips)
(The particles heated by the flame increase in their amount of vibration (because they are hotter and have more energy), the vibration are then transferred to neighbouring particles and eventually to the position of the clips)

30
Q

If particles are concentrated what does it mean?

A

Lots packed together

31
Q

If the particles are in low concentration what does that mean

A

A few quite spread out

32
Q

If liquid is sprayed describe the the distribution of the particles

A

They are more concentrated near the spray and less concentrated away from the spray

33
Q

What happens to particles when wire is pulled

A

The particles are pulled further apart and the wires stretched. (At the same time the wire gets thinner)

34
Q

What’s the air pressure for an empty bottle

A

The same on the inside and outside

35
Q

If you create a vacuum in a bottle what happens

A

There are no air particles in a vacuum so the pressure inside becomes lower then the air pressure outside

36
Q

What’s diffusion

A

Diffusion is the movement of particles in a fluid from an area of high concentration to an area with low concentration.

If two types of fluid are mixed the particles of each fluid will continue to mix until they are evenly distributed

37
Q

Why do you get diffusion in gases and liquids but not in solids

A

The particles in gases and liquids are able to move about. Particles in solids cannot move about.

38
Q

What’s brownian motion

A

It is is the random motion of particles suspended in a fluid (a liquid or gas)

caused by the random collision of particles in the gas or liquid (making them move in an unpredictable way) For example smoke in the air or pollen on water

39
Q

What is a fluid

A

Liquid (or a gas)

Science (13 decks)

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