KEY POINTS
- A substance which is formed by the chemical combination of two or more different elements in fixed ratio is called Compound.
- The process which is used to separate insoluble particles from liquid by filter paper is known as Filtration.
- During filtration process the clear liquid is called Filtrate.
- During filtration process all those particles left behind left behind the filter paper is called Residue.
- A process in which some solid substances, when heated, change directly to the gases state without passing through the liquid state is known as Sublimation.
- Sublimation is a technique that helps chemists to purify.
- The process of evaporation followed by condensation is called Distillation.
- “Chromatography” is a modern technique used for the separation of mixture.
- Simple chromatography is carried out on paper.
- Letter used to identify an element in periodic table is known as “Symbol”.