* Mixture: A combination of two or more substances where each substance retains its own properties. The components can be easily separated by physical means.

* Solution: A homogeneous mixture where one substance (solute) dissolves completely into another (solvent).

When you mix salt and sugar, the individual crystals of salt and sugar remain distinct, even though they are now mixed together. You can see the different crystals, and you can separate them using physical methods like picking them apart or dissolving one in water and filtering the other out.

Important Note: If you dissolve salt or sugar in water, that would be a solution. The salt or sugar dissolves completely, and the mixture becomes homogeneous.