Long answer type questions 1 x 5 = 5 1. Explain the following giving examples. a) saturated solution b) pure substances c) colloid d) suspension
Answers
Explanation:
(a) The term saturated solution is used in chemistry to define a solution in which no more solvent can be dissolved. It is understood that saturation of the solution has been achieved when any additional substance that is added results in a solid precipitate or is let off as a gas.
Eg: Saltwater
(b) Pure substance: A material that is composed of only one type of particle.
Eg: Gold, oxygen and water.
(c) Colloid: A homogeneous non-crystalline substance consisting of large molecules or ultramicroscopic particles of one substance dispersed through a second substance.
Eg: Gels, sols and emulsions.
d) Suspension: A suspension is a heterogeneous mixture in which solute-like particles settle out of a solvent-like phase sometime after their introduction. We apply the word suspension when particles are big enough to eventually settle.
Eg: wheat flour and water.