Since we are familiar with how chemical changes happen, there are aftermath of the combination of two substances to form a new substance. Effects of chemical changes can be beneficial or harmful to surroundings. What are the effects? Are the newly formed substances easily reversible? Take this quiz now!
It is not easily reversible
It is easily reversible
It always involve catalysts
No new substances are formed
Filtration
Freezing
Condensation
Melting
Carbon (II) oxide
Carbon (IV) oxide
Sulphur (VI) oxide
Sulphur (IV) oxide
Carbon
Sulphur
Molybdenum
Manganese
Filtration
Fractional distillation
Rusting of metals
Burning of paper
Aluminum oxides
Tetraoxosulphate (VI) acid
Hydrogen sulphide
Hydrogen peroxide
Burning of paper
Mixing of water with salt
Rusting of metals
Melting of candle
Catalytic reaction
Exothermic reaction
Endothermic reaction
Irreversible reaction
Coke
Coal tar
Ammoniacal liquor
Bronze
Exothermic reaction
Endothermic reaction
Reversible reaction
Catalytic reaction