A. homogeneous mixture
Ans) the molecules of constituent solute and solvent are uniformly mixed throughout its bulk.
For example : Sugar and water
B. heterogeneous mixture
Ans) In heterogeneous mixtures the molecules of the constituents are not uniformly mixed throughout the bulk.
For example : Sand and Water(Suspension of an insoluble solid in a liquid)
Ans) Elements are pure substances which can not be broken down into simpler substances by ordinary chemical changes
For example : : gold, silver
Ans) Compounds are the pure substances which can be broken down into simpler substances by ordinary chemical changes.
For example : Nacl , H2O