chrome steel
silicon steel
stainless steel
invar
chlorine
carbon monoxide
sulphur dioxide
o-cresol
Baking soda
Milk
Chloroform
Copper wire
its molecular weight is low
it is denser than ice
it is a good solvent for many ionic substances
the molecules of water are joined by hydrogen bonds
Protons
Neutrons
Electrons
Protons and electrons
pyridine
hydrogen sulphide
cacodyl
carbylamines
Palladium
NaCI
KOH
Dilute H2SO4
diamond
coke
graphite
charcoal
calcium sulphate
ammonium chloride
caustic soda
silver nitrate
gold
zinc
tin
molybdenum
lead
zinc
mercury
chromium
urea
ammonium nitrate
ammonium sulphate
calcium cyanamide
Gasoline
Kerosene
Sulphuric acid
Alcohol
chlorine
nitrogen
sulphur
hydrogen
Chloroform
Morphine
Streptomycin
Cocaine
nitrogen
nitric oxide
nitrogen peroxide
nitrous oxide
decomposition of petrol
fermentation of animal and plant waste
destructive distillation of coal
electrolysis of water
sucrose
glucose
fructose
mannose
calcium carbonate
sodium carbonate
magnesium sulphate
ferric chloride
Oxygen
Air
Hydrogen
Chlorine
Aluminium
Chromium
Nickel
Tungsten
Moissan
Davy
Faraday
Marie Curie
Vitamin B6
Vitamin C
Vitamin K
Vitamin D
whooping cough
tetanus
diphtheria
All the three
A
C
B12
B1
Polyethylene
Nylon
Terylene
Rayon
Europeans
Egyptians
Asians
Americans
fractional distillation
fractional crystallisation
sublimation
evaporation
tin and copper
tin and lead
tin and zinc
tin, copper and zinc
sodium hydroxide
sodium carbonate
sodium bicarbonate
potassium chloride