Adsorption and Absorption Concepts

The video tutorial explains the concepts of absorption and adsorption. Absorption involves a substance being fully integrated into another medium, forming a solution. Adsorption, on the other hand, involves molecules sticking to the surface of a solid or liquid. The video provides examples of both processes, such as perfume absorption by skin and moisture absorption by chips. It also demonstrates adsorption using a charcoal pellet in a dye solution. Practical applications of adsorption, like air deodorizing and gas masks, are discussed.

What is the best way to remove a tea spill immediately?

• Use a towel

• Use a tissue paper

• Use a sponge

• Use a newspaper

Which of the following is an example of absorption?

• Charcoal attracting dye

• Water on a leaf

• Perfume scent on skin

• Dust on a surface

What happens to the molecules during adsorption?

• They form a new compound

• They evaporate

• They stick to the surface

• They dissolve in the medium

Which process involves molecules being loosely held on a surface?

• Absorption

• Diffusion

• Osmosis

• Adsorption

Which of the following is NOT a characteristic of absorption?

• Spreads throughout the medium

• Forms a solution

• Difficult to reverse

• Involves surface interaction

How can the adsorption process be reversed?

• By shaking or warming

• By cooling

• By increasing pressure

• By adding more adsorbent

Which process is typically irreversible by simple means?

• Diffusion

• Absorption

• Evaporation

• Adsorption

What happens to the red dye when a charcoal pellet is added to the jar?

• It changes color

• It evaporates

• It sticks to the charcoal

• It dissolves completely

What is a common use of activated charcoal?

• Heating

• Cooling

• Deodorizing air

• Lighting

Which of the following is an application of adsorption?

• Freezing

• Painting

• Deodorizing air

• Cooking