Separation Techniques Exploration

What is the purpose of filtration in separation techniques?

• To mix different liquids thoroughly.

• to separate solid particles from a mixture

• to separate solvent from a mixture

• To remove all impurities

Describe the process of evaporation in simple terms.

• Evaporation is the process of liquid water turning into vapor when it gains enough energy.

• Evaporation occurs only at freezing temperatures.

• Evaporation is when vapor turns into liquid water.

• Evaporation is the process of solid ice melting into water.

Explain the process of crystallization and its importance.

• Forming solid crystals from a solution, crucial for purifying substances.

• Crystallization occurs only at high temperatures.

• Crystallization is only used in the production of food items.

• Crystallization is the process of dissolving solids in a liquid.

List one application of magnetic separation in industry.

• Sorting of plastic materials in recycling.

• Extraction of oil from seeds in food processing.

• Separation of iron ore from impurities in mining.

• Separation of gold from silver in jewelry making.

How can we separate a mixture of sugar and sand.

• Filter out the solution

• Crystallize the solution

• Evaporate the solution and filter

• Filter the solution and evaporate

What is the best way to obtain sugar from a solution of sugar and water?

• Crystallization

• Evaporation

• Filtration

• Sublimation

The last step in crystallization is..

• Rinse the crystals

• Dry the crystals

• Filter the crystals

• Heat the crystals

How can we separate solid iodine from sand?

• By crystallization

• By filtration

• By dissolving and evaporating

• By sublimation

What is an advantage of using crystallization over evaporation.

• less apparatus are needed

• takes less time

• Particles do not undergo thermal decomposition

• procedure is simple

What are all the separation techniques used to separate a mixture of iron fillings, salt and sand?

• Magnetic separation, filtration, evaporation

• Filtration, evaporation, sublimation

• Magnetic separation, crystallization, sublimation

• Filtration, magnetic sepearation