When we burn a cleaned piece of magnesium ribbon in air, we observe :
a white dazzling light while burning
a white residue left after burning
a black residue left after burning
(1) and (2)
Immiscible liquids separate out in layers depending on their densities.The principle of this is
Centrifugation
Separating funnel
Evaporation
Condensation
Fog is an example of
Aerosol
Foam
Emulsion
Sol
It is divided into metals, non-metals and metalloids.
Substance
Elements
Compounds
Mixture
Sponge is an example of
Gel
Rubber is an example of