Chemistry Quiz: Filtration and Crystallisation

What is the purpose of the filtration process in chemistry?

• To combine solid particles with a liquid

• To evaporate the liquid from the solid particles

• To separate solid particles from a liquid

• To speed up the chemical reaction between solid and liquid

Explain the steps involved in the filtration process.

• Using a magnet to attract the solid particles, pouring the liquid through a coffee filter, and then collecting the solid particles

• Choosing the appropriate filter paper and funnel, setting up the filtration apparatus, pouring the mixture to be filtered into the funnel, allowing the liquid to pass through the filter paper, leaving behind the solid particles, and collecting the filtrate in a container.

• Mixing the solid particles with the liquid, heating the mixture, and then pouring it through a strainer

• Adding more solid particles to the mixture, stirring it vigorously, and then pouring it through a cloth filter

Why is it important to use a filter paper in the filtration process?

• To make the liquid more concentrated

• To mix the solid particles with the liquid

• To speed up the filtration process

• To separate the solid particles from the liquid

What is the crystallisation method used for in chemistry?

• To separate a solid that has dissolved in a liquid

• To combine two liquids into a solid

• To speed up a chemical reaction

• To measure the acidity of a solution

Describe the process of crystallisation.

• The process of crystallisation involves heating a solution to a high temperature.

• Solid crystals form from a homogeneous solution.

• Crystals are formed by mixing two different solutions together.

• Crystallisation is the process of turning a solid into a liquid.

What are the factors that affect the rate of crystallisation?

• Temperature, concentration of the solution, and presence of impurities

• Humidity, type of container, and distance from the equator

• Pressure, color of the solution, and size of the container

• Type of stirring rod, time of day, and pH level of the solution

How can insoluble solids be separated from a liquid mixture?

• Decantation

• Sublimation

• Evaporation

• Filtration

Explain the difference between simple filtration and vacuum filtration.

• Simple filtration is used for complex mixtures.

• Vacuum filtration uses a vacuum pump to speed up the process.

• Simple filtration uses a vacuum pump to speed up the process.

• Simple filtration is a slower process compared to vacuum filtration.

What are the different filtering techniques used in chemistry?

• Gravity filtration, vacuum filtration, and centrifugal filtration

• Sedimentation filtration, distillation filtration, and decantation filtration

• Chemical filtration, biological filtration, and physical filtration

• Paper filtration, air filtration, and water filtration

When is gravity filtration preferred over vacuum filtration?

• When the solution is not too viscous and the solid particles are relatively large and settle easily.

• When the solution is not too viscous and the solid particles are very small

• When the solution is very viscous and the solid particles are very small

• When the solution is not viscous and the solid particles are very small