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Chemistry > C1 Air Quality-CGP > Flashcards

C1 Air Quality-CGP Flashcards

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0
Q

When the earth cooled..

A

The earth formed a thin crust

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1
Q

Millions of years ago the earths surface was…

A

Molten and any atmosphere boiled away

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2
Q

Volcanoes gave out lots of gases, including

A

Carbon Dioxide
Water Vapour
Nitrogen

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3
Q

The oceans formed when…

A

Water vapour condensed

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4
Q

When there was lots of CO2 in the atmosphere…

A

Green plants evolved and produced Oxygen by photosynthesis

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5
Q

When plants died the buried under… … ….

And some co2 got locked ⬆ which over years turned into…

A

Layers of rock

Fossil fuels

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6
Q

When there was more oxygen the atmosphere killed of some organisms but allowed more more

A

Complex organisms to evolve

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7
Q

The atmosphere is made ⬆ of four main gasses which are

A

Nitrogen 78%
Oxygen 21%
Argon and other 1%

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8
Q

A pollutant is a chemical that’s harmful because it’s

A

In the wrong place

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9
Q

Particulates are

A

Tiny particles in the air

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10
Q

Human activity is adding

A

Pollutants to the air

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11
Q

The 5 main pollutants are

A 
Carbon dioxide
Carbon monoxide
Particulates
Sulfer dioxide
Nitrogen oxides
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12
Q

The 3 main ways in which we are adding pollutants to the atmosphere are

A

Burning fuels
Power stations
Vehicles

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13
Q

Natural ways pollute the earth like…

A

Volcanoes

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14
Q

Pollutants affect us directly and indirectly, for example

A

Directly- death like from breathing difficulties

Indirectly- environment, acid rain kills fish that we eat

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15
Q

Atoms joined together are called

A

Molecules

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16
Q

Most fossil fuels have just 2 atoms that are

A

Hydrogen
Carbon
These also known as HYDROCARBONES

17
Q

Fossil fuels are formed from

A

Dead plants and animals

18
Q

We get fuel from … which is drilled out of the earth.

A

Crude Oil

19
Q

Unlike many other fossil fuels, coal is made ⬆ of

A

Carbon + impurities

No hydrogen

20
Q

⬆ to page 12

A

Ok

21
Q

Why are fossil fuels burnt?

A

Release energy

22
Q

What are the 2 main purposes of fossil fuels

A

Power stations and vehicles

23
Q

When fossil fuels burn with carbon in it produces lots of

A

Pollutants containing carbon stuff obvioustly

24
Q

1 way Carbon dioxide is made is when fossil fuels burn with lots of

A

Oxygen

Complete combustion

25
Q

Carbon monoxide is made when fossil fuels bunt without much

A

Oxygen

Incomplete combustion

26
Q

Carbon basses pollutants are

A

Carbon

  • monoxide (1 oxygen atom)
  • dioxide (2 oxygen atoms)
  • particles (little bits of it)
27
Q

The “””””””” of carbon dioxide looks like

A

O-C-O

CO2

28
Q

What’s more harmful to us?
Carbon monoxide
Carbon Dioxide

A

Carbon Monoxide

Cause headaches, drowsiness and even kill

29
Q

Carbon particles

a) Make by ______
b) Also called ______
c) Makes stuff ______

A

a) Carbon burning incompletely
b) Soot
c) Dirty

30
Q

Where does sulfur one from

A

In fossil fuels

Only small amounts of it though

31
Q

Sulfur dioxide is a pollutant because it causes

A

Acid rain

Its the the only way it can go

32
Q

Why is acid rain bad?

4/2

A

Makes water acidic killing fish
Damages statues
Kills animals
Kills trees

33
Q

Nitrogen turns to a form of nitrogen monoxide when it reacts with… in ….Then after it reacts with more oxygen to form….

A

Oxygen
Hot enough places/car engines
Nitrogen Dioxide

34
Q

Nitrogen Monoxide and Nitrogen Dioxide are jointly referred to as?
NO - NO2

A

Nitrogen oxides

NOx

35
Q

What does nitrogen dioxide become?

A

Acid rain/dilute nitric acid

Similarly to sulfur dioxide

36
Q

The simplistic way to reduce pollution is

A

To use less electricity

37
Q

Filtering natural gas and fuel oil can reduce the amount of

A

Sulfur

38
Q

When coal is burnt you can reduce the amount of …. And …. By ….
Which involve running an …. Down a flue chimne.

A

Sulfur dioxide
Particulates
Wet scrubbing
Alkali

39
Q

If everybody used public transport less

A

Pollutants would be made

40
Q

Biofuels give out…….CO*2…. taken in by plants that make the fuel itself.

A

The same amount of co2 as they take in

They are carbon neutral

41
Q

Electric cars give out… Emissions

A

No, however they are produced elsewhere

Chemistry (9 decks)

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