Question

illustrate the different types of mixtures with an experiment.

Answer 1

There are 2 types of mixtures - Homogeneous Mixture and Heterogeneous Mixture

Homogeneous Mixture - Those mixtures in which the substances are uniformly mixed without any clear boundary of separation are called homogeneous mixtures.

Heterogeneous Mixture - Those mixtures in which the substances have uniform composition and also have visible boundaries of separation between the constituents are called homogeneous mixtures.
Let's perform an experiment to distinguish these 2 mixtures.

1. Let's divide the students of a class into the groups W, X, Y and Z.
2. Group W takes a beaker containing $100mL$ of water and one spatula full of Copper Sulphate (${\mathrm{CuSO}}_4$) powder.
3. Group X takes $100mL$ water and two spatulas full of Copper Sulphate (${\mathrm{CuSO}}_4$) powder in another beaker.
4. Groups Y and groups Z can take any amounts of Copper Sulphate (${\mathrm{CuSO}}_4$), Potassium Permanganate (${\mathrm{KMnO}}_4$) and Common Salt ($\mathrm{NaCl}$) and mix the given components to form a mixture.
5. Mention the observations based on the uniformity in colour and texture and compare the colour of the solutions of the two groups.

Observation -

1. Groups W and groups X have obtained a mixture which has a uniform composition throughout the process. Such mixtures are called homogeneous mixtures or solutions. Though both the groups, i.e., W and X have obtained Copper Sulphate (${\mathrm{CuSO}}_4$) solution in which the intensity of the colour of the solutions is different.
2. Groups Y and groups Z have obtained mixtures, which contain physically distinct parts and have non-uniform compositions. Such mixtures are called heterogeneous mixtures.

Final Conclusion -
A mixture which has a uniform composition throughout is called a homogeneous mixture. A mixture which has variable composition throughout is called a heterogeneous mixture.