Question

1. why is it easy to separate mixtures? 4. what is the difference between homogenous and heterogenous mixtures? 5. what is a solution? 6. what is an alloy? 7. what is a suspension? 8. what is a colloid?

Explanation:

1. Mixtures are easy to separate because the substances in them are only physically combined and retain their own properties, allowing for separation by physical means like filtration, evaporation etc.
2. Homogeneous mixtures have uniform composition throughout, while heterogeneous mixtures have non - uniform composition with visible different parts or phases.
3. A solution is a homogeneous mixture where a solute is dissolved in a solvent at a molecular or ionic level.
4. An alloy is a homogeneous mixture of two or more metals, or a metal and a non - metal, with metallic properties.
5. A suspension is a heterogeneous mixture where solid particles are dispersed in a liquid or gas and will settle out over time.
6. A colloid is a heterogeneous mixture where particles are dispersed and do not settle out quickly, with particle size between that of a solution and a suspension.

Answer:

1. Because substances in mixtures are physically combined and retain their properties.
2. Homogeneous: uniform composition; Heterogeneous: non - uniform composition.
3. A homogeneous mixture with solute dissolved in solvent at molecular/ionic level.
4. A homogeneous mixture of metals or metal and non - metal with metallic properties.
5. A heterogeneous mixture with solid particles in liquid/gas that settle out.
6. A heterogeneous mixture with dispersed particles that don't settle quickly.