chem dont know Flashcards
reactivity series mnemonic
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General
reactivity series
Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Hydrogen
Copper
Silver
Gold
cast iron
- hard / brittle
- not compressed
stoves / drains / engines
low carbon
- easily shaped
car bodies / domestic goods
stainless
- hard
- resistant to corrosion
cutlery / sinks / tools
high carbon
- hard
cutting tools
iron
- hard and thought
- rolled into sheets / cut
machinery / tools / car bodies / cutlery
aluminium
- conducts elec / heat
- malleable
- high mtp
- low density
- resists corrosion
aircraft / trains / saucepans
copper
- conducts heat / elec
- malleable
- high mtp
- ductile
- unreactive
electric cabling /plumbing pipes
CO2 test equation
Ca(OH)2 + CO2 > CaCO3 + H2O
iron 2 vs iron 3 - test
green vs brown
ammonium + UI
blue
crude oil trends as you go down
bp ^
viscosity ^
volatility - decreases
flammability - decreases
colour - darker
size - bigger
fraction order
refinery gases
gasoline
kerosene
diesel
fuel oil
bitumen
alkAne + halogen
UV light
SUBSTITUTION
> bromoethane + hydrogen bromine
alkEne + halogen
> bromoethane
room temp
ADDITION
aluminium electrolysis - how is operating temp kept low
AlO dissolved in cryolite
why lid in chromatography
decreases evaporation of solvent
decreases toxic fumes
N2 uses
food packaging
aircraft tires
makes ammonia - haber processes
CaCl2
slightly soluble
why petrol causes acid rain
nitrogen or sulphur IN AIR oxidises to make NO2 / SO2 which dissolves in water to make acid rain
molten substance in a blast furnace is called
slag
iron ore source
haematite
haematite compound
FeO
limestone compound
CaCO3
iron blast furnace raw materials
coke
limestone
phytoextraction
- some plants absorb metal compounds through roots
- concentrate compounds because of it
- ## plants burnt to make ash that contains metal compounds
bacterial extraction
- bacteria absorb metal compounds
- produce solutions called leachates which contain metals