zinc
red phosphorus
magnesium
sulphur
C. magnesium
sucrose
maltose
glucose
fructose
iodoform
chloroform
nitrous oxide-ether mixture
chloroform-nitrous oxide mixture
Carbon disulphide
Chloroform
Carbon tetrachloride
Methylene chloride
nitrogen
helium
neon
argon
nickel
aluminium
mercury
calcium
Arsenic
Barium
Benzene
Bitumen
sodium hydroxide
sodium carbonate
sodium bicarbonate
potassium chloride
shaving creams
adhesive tapes
toilet powders
lubricants
Tin
Silver
Iodine
Arsenic
Limestone
FeO
SiO2
MgO
kerosene
naphtha
lubricating oil
asphalt
Tungsten steel
Manganese steel
Chromium steel
Nickel steel
methane
nitrogen
carbondioxide
ethylene
6.023 x 1022
1 x 10-14
cl 6.056 x 10-6
6.023 x 1023
tine
magnesium
zinc
copper
acetic acid
chloroform
urea
methane
homogeneous, sulphates
heterogeneous, nitrates
heterogeneous, carbonates
homogeneous, silicates
atomic number
valency
atomic mass
atomic radius
magnesium chloride
sodium chloride
calcium sulphate
potassium chloride
diamond
coke
graphite
charcoal
ethyl alcohol
chloroform
oxygen
methyl alcohol
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
number of neutrons in the nucleus
number of protons and neutrons in the nucleus
the valency of the element
number of protons in the nucleus
iron with very low percentage of carbon
iron with high percentage of carbon
iron and chromium
iron and manganese
carbohydrates
proteins
salts
fats
it contains carbonates of calcium and magnesium
it contains sodium chloride
it is highly coloured
it contains suspended impurities
sucrose
glucose
fructose
a mixture of glucose and fructose
Silicon
Oxygen
Carbon
Calcium
as an analgesic
in the purification of water
as a fertilizer
as a disinfectant
a congenital disease
a communicable disease
an acquired disease
a contagious disease