SCIENCE AND TECHNOLOGY - CLASS 6 - 12/05/2021

 

In today's class we saw various characteristics of mixtures

 

Non-Uniform heterogeneous mixture:

Eg:Lemonade

Here the solute particles are unstable and scattering of light occurs until the solute particles get settled in the bottom. These kind of mixtures can be separated by filtration method. 

 

Uniform-heterogeneous mixture:

Eg:milk

 

Here scattering of light does not occur and the chemical combination is same throughout the mixture. The solution is stable and the mixture can be separated by centrifugation process ( eg: butter from curd). 

A uniform-heterogenous mixture consists of a dispersed phase and a dispersion medium. 

 

Chromatography:

If two or more solutes are present in a solvent, they can be separated by chromatography. 

 

Distillation:

This method is used to separate a mixture of liquids containing different boiling points. Eg: various components are seperated from crude oil through this process. 

 

Metals:

These elements are good conductors of heat and electriciry. They are Malleable, ductile and strong. 

 

These basic concepts will be helpful to learn advanced concepts in forthcoming classes.

Credits : Leo Vishnu Varthan

Economy Module 2 Class 3- 19/02/2022