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chemistry > chem dont know > Flashcards

chem dont know Flashcards

1
Q

reactivity series mnemonic

A

Please
Send
Lions
Cats
Monkeys
And
Cool
Zebras
Into
Hot
Countries
Signed
General

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2
Q

reactivity series

A

Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Hydrogen
Copper
Silver
Gold

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3
Q

cast iron

A
  • hard / brittle
  • not compressed
    stoves / drains / engines
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4
Q

low carbon

A
  • easily shaped
    car bodies / domestic goods
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5
Q

stainless

A
  • hard
  • resistant to corrosion
    cutlery / sinks / tools
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6
Q

high carbon

A
  • hard
    cutting tools
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7
Q

iron

A
  • hard and thought
  • rolled into sheets / cut
    machinery / tools / car bodies / cutlery
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8
Q

aluminium

A
  • conducts elec / heat
  • malleable
  • high mtp
  • low density
  • resists corrosion
    aircraft / trains / saucepans
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9
Q

copper

A
  • conducts heat / elec
  • malleable
  • high mtp
  • ductile
  • unreactive
    electric cabling /plumbing pipes
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10
Q

CO2 test equation

A

Ca(OH)2 + CO2 > CaCO3 + H2O

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11
Q

iron 2 vs iron 3 - test

A

green vs brown

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12
Q

ammonium + UI

A

blue

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13
Q

crude oil trends as you go down

A

bp ^
viscosity ^
volatility - decreases
flammability - decreases
colour - darker
size - bigger

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14
Q

fraction order

A

refinery gases
gasoline
kerosene
diesel
fuel oil
bitumen

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15
Q

alkAne + halogen

A

UV light
SUBSTITUTION
> bromoethane + hydrogen bromine

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16
Q

alkEne + halogen

A

> bromoethane
room temp
ADDITION

17
Q

aluminium electrolysis - how is operating temp kept low

A

AlO dissolved in cryolite

18
Q

why lid in chromatography

A

decreases evaporation of solvent
decreases toxic fumes

19
Q

N2 uses

A

food packaging
aircraft tires
makes ammonia - haber processes

20
Q

CaCl2

A

slightly soluble

21
Q

why petrol causes acid rain

A

nitrogen or sulphur IN AIR oxidises to make NO2 / SO2 which dissolves in water to make acid rain

22
Q

molten substance in a blast furnace is called

A

slag

23
Q

iron ore source

A

haematite

24
Q

haematite compound

A

FeO

25
Q

limestone compound

A

CaCO3

26
Q

iron blast furnace raw materials

A

coke
limestone

27
Q

phytoextraction

A
  • some plants absorb metal compounds through roots
  • concentrate compounds because of it
  • ## plants burnt to make ash that contains metal compounds
28
Q

bacterial extraction

A
  • bacteria absorb metal compounds
  • produce solutions called leachates which contain metals

chemistry (17 decks)

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