Cadmium
Lead
Nickel
Chromium
Electromagnets
Razor blades
Burglar proof safety lockers
Surgical instrument
Iodine
Fluorine
Bromine
Chlorine
Ethane
Methane
Nitrogen
All of the above
Yellow
Red
Black
White
Fat
Carbohydrate
Amino acid
Protein
Fractional distillation
Steam distillation
Vacuum distillation
Crystallization
High density
High lost
Weight
Lusture
Manganese oxide
Chromic oxide
Cadmium sulphide
Selenium sulphide
LP gas
Water gas
Coal gas
Producer gas