evaporation
using a magnet
sublimation
sedimentation
C. sublimation
dichloro-phenoxy-acetic acid
superphosphate of lime
chlorofluorocarbons (CFC)
dichloro-diphenyl-trichloro-ethane
aldehydes
alkenes
amino acids
alkynes
mercaptans
propylene
carbon disulphide
phosgene
ammonia
ammonium nitrate
ammonium chloride
ammonium nitrite
Oxygen
Air
Hydrogen
Chlorine
iron with zinc
zinc with iron
copper with silver
silver with gold
they may appear better
they can resist the action of acids and alkalies
they lose their brittleness
they can withstand temperature shocks
6.023 x 1022
1 x 10-14
cl 6.056 x 10-6
6.023 x 1023
Gasoline
Benzoline
Kerosene
Petroleum ether
A mixture of potassium nitrate and carbon
A mixture of ammonium chloride and sodium nitrate
A mixture of potassium chlorate and manganese dioxide
A mixture of ammonium nitrate and charcoal
nitrogen
nitric oxide
nitrogen peroxide
nitrous oxide
potassium and lead silicates
zinc and barium borosilicates
potassium and calcium silicates
sodium and calcium silicates
Hydrolysis
Hydrogenation
Dehydration
Dehydrogenation
fractional distillation
fractional crystallisation
sublimation
evaporation
as a nucleus to condense water vapour resulting in rain
to maintain the average density of air
to minimise the inflammatory nature of oxygen
to protect the inhabitants of the earth from the effects of ultra violet rays.
a disinfectant
an analgesic
a hypnotic
a dye
benzene
methane
ethane
butane
Liebig
Pasteur
Bunsen
Erlenmeyer
Astatine
Francium
Tritium
Zirconium
sodium hydroxide
sodium carbonate
sodium bicarbonate
potassium chloride
CO2 poisoning
CO poisoning
phosgene poisoning
anesthesia
nitric oxide
nitrogen peroxide
nitrogen pentoxide
nitrous oxide
acetone
ether
ethyl alcohol
methyl alcohol
adrenalin
glucagon
epinephrin
thyroxin
an explosive
a fertilizer
a dye
a bleaching agent
ten
twenty
zero
fifty
evaporation
using a magnet
sublimation
sedimentation
ammonium dichromate
copper Sulphate
magnesium Sulphate
sodium thiosulphate
lead
zinc
mercury
chromium
kerosene
naphtha
lubricating oil
asphalt