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Chemistry End Of Year 9 > 1 > Flashcards

1 Flashcards

0
Q

Neutron (charge)

A

0

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1
Q

Proton (charge)

A

+1

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2
Q

Electron (charge)

A

-1

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3
Q

Proton (relative mass)

A

1

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4
Q

Neutron ( relative mass)

A

1

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5
Q

Electron (relative mass)

A

1/1840

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6
Q

Chemical symbol of ammonium

A

NH4

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7
Q

Chemical symbol of hydroxide

A

OH

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8
Q

Chemical symbol of carbonate

A

CO3

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9
Q

Noble gases

A

Helium, neon, argon, krypton , xenon, radon

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10
Q

Halogens

A

Fluorine, chlorine, bromine, iodine, astatine

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11
Q

Reactivity series extracted by: electrolysis

A

Potassium, sodium, calcium, magnesium, aluminium

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12
Q

Reactivity series extracted by: heating ore with carbon

A

Zinc, iron, tin, lead, copper

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13
Q

Reactivity series extracted by: FOUND PURE

A

Silver, gold, platinum

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14
Q

Amount of argon in air

A

0.9%

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15
Q

Amount of o2 in air

A

21%

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16
Q

Amount of nitrogen in air

A

78%

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17
Q

Amount of co2 in air

A

0.04%

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18
Q

Co2 increased due to

A

Burning fossil fuels

Deforestation

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19
Q

Co increased to

A

Incomplete combustion

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20
Q

Sulfur dioxide caused by

A

Volcano eruption

Fossil fuel combustion

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21
Q

Methane released by

A

Cattle burp/fart

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22
Q

Nitrogen oxides released by

A

Lightning

Cars

23
Q

Early atmosphere formation stages

A

1) volcanoes released co2 water vapour
2) earth cooled forming oceans
3) co2 dissolved into oceans, turned into shells of sea animals
4) shells turned intro sediment
5) plants photosynthesised

24
Q

Calcium carbonate heated forms

A

Calcium oxide and co2

25
Q

Add water to calcium oxide to get

A

Calcium hydroxide solution

26
Q

Add co2 to calcium hydroxide solution

A

Calcium carbonate

27
Q

Above ph7

28
Q

Below ph7

29
Q

Universal indicator solution

A

Red acidic
Green neutral
Purple alakaline

30
Q

Acids turn blue litmus paper

30
Q

Alkalis turn red litmus paper

30
Q

Substances that can neutralise acid

A

Metal carbonates
Metal oxides
Metal hydroxides

31
Q

Chlorine uses

A

Cleaning products
Make plastics
Kill bacteria in water

32
Q

Test for chlorine

A

Turns damp blue litmus paper red then white

32
Q

Hydrogen uses

A

Rocket fuel

Hydrogen fuel cells

32
Q

Oxygen uses

A

Breathing in hospitals

32
Q

Steel alloy of

A

Iron

Carbon

32
Q

18k gold alloy of

A

Gold
Silver
Copper

32
Q

Nitinol alloy of

A

Nickel

Titanium

32
Q

Nitinol uses

A 
Glasses frames
Making stents(for collapsed blood vessels)
32
Q

Order of crude oil fractions (top to bottom)

A 
Gases
Petrol
Kerosene
Diesel
Fuel
Bitumen
32
Q

InComplete combustion, why?

extra products?

A

Not enough oxygen available

Produces carbon monoxide and soot

32
Q

Acid rain caused by

A

Burning of fossil fuels , releasing sulphur dioxide which dissolves in clouds

32
Q

Ethanol produced by

A

Processing sugar wheat or sugar beet with yeast

32
Q

Teacups (choosing fuels)

A 
Transport
Energy
Availability
Cost
Usability
Pollution
Storage
32
Q

Hydrogen fuel cells ,explain

A

Hydrogen gas reacts with oxygen to make water (without combustion) releases electrical energy

32
Q

Disadvantages of hydrogen fuel

A

Storage

Cost

32
Q

Alkanes defined and examples

A 
Only have single bonds
Saturated
Methane
Ethane
Propane
Butane
32
Q

Alkenes defined

A

At least 1 double bond

Unsaturated

32
Q

Alkenes indicator

A

Turn bromine water from orange to colourless

33
Q

Cracking is

A

Breaking long chain NOT useful into 2 USEFUL parts

34
Q

Products of cracking

A

Alkene (used for polymerisation)

Shorter chain alkane

35
Q

Cracking requires

A 
soaked wool (in alkane)
Porcelain chips catalyst
36
Q

Polymerisation is

A

Breaking double bond

Turning monomers to polymers

Chemistry End Of Year 9 (3 decks)

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