Question 1: Which of the following is a method used to separate a soluble solid from a liquid?

Answer: Evaporation

Question 2: True or False: Filtration can be used to separate a mixture of sand and water.

Answer: True

Question 3: Explain the process of distillation and what types of mixtures it is used to separate.

Answer: Distillation is a process used to separate mixtures based on differences in boiling points. It is typically used to separate liquid mixtures.

Question 4: Calculate the amount of salt that can be obtained from evaporating 100 ml of a 5% salt solution. (Use the formula: mass of solute = concentration x volume)

Answer: 5 grams

Question 5: Match the following separation techniques to their correct definitions:

Answer: See full answer key

Question 6: Order the steps involved in the process of crystallization:

Answer: See full answer key

Question 7: Fill in the blank: __________ is the process of separating substances based on their boiling points.

Answer: Distillation

Question 8: True or False: Magnetic separation can be used to separate non-magnetic materials.

Answer: False

Question 9: Describe the principle of sedimentation and provide an example of its use.

Answer: Sedimentation is based on the density difference between solids and liquids. An example is separating sand from water.

Question 10: Explain why fractional distillation is more effective than simple distillation for separating components of a mixture with close boiling points.

Answer: Fractional distillation uses a fractionating column, which provides more surface area for repeated condensation and vaporization, allowing better separation of components with close boiling points.

Question 11: State the purpose of using a condenser in the distillation process.

Answer: A condenser cools and condenses the vapor back into liquid form.

Question 12: What is the primary factor that determines the method used to separate a mixture?

Answer: The physical properties of the components

Question 13: Explain the role of a solvent in the chromatography process.

Answer: The solvent carries the different substances in the mixture at different rates, allowing them to be separated.

Question 14: Which separation technique is most suitable for separating a mixture of iron fillings and sulfur powder?

Answer: Magnetic separation