Techniques for Separating Mixtures

What is the process called when a liquid is separated from a solid by pouring it through a filter?

• Evaporation

• Filtration

• Distillation

• Chromatography

Which technique would you use to separate a mixture of sand and salt?

• Filtration

• Distillation

• Evaporation

• Magnetic separation

What is the main difference between a homogeneous and a heterogeneous mixture?

• Homogeneous mixtures have uniform composition; heterogeneous mixtures do not.

• Heterogeneous mixtures have uniform composition; homogeneous mixtures do not.

• Homogeneous mixtures can be separated by filtration; heterogeneous mixtures cannot.

• Heterogeneous mixtures can be separated by distillation; homogeneous mixtures cannot.

Which method is best for separating a mixture of two liquids with different boiling points?

• Filtration

• Chromatography

• Distillation

• Sieving

How can the concentration of a solution be increased?

• By adding more solvent

• By adding more solute

• By heating the solution

• By cooling the solution

Which technique is used to separate coloured substances in a mixture?

• Filtration

• Chromatography

• Distillation

• Evaporation

What is the process of separating a solid from a liquid by heating the liquid until it becomes a gas?

• Filtration

• Evaporation

• Distillation

• Chromatography

Tags

NGSS.MS-PS1-4

Which of the following is a characteristic of a heterogeneous mixture?

• It has a uniform appearance.

• Its components are easily distinguishable.

• It cannot be separated by physical means.

• It has a fixed composition.

What is the best method to separate iron filings from sand?

• Filtration

• Distillation

• Magnetic separation

• Chromatography

Which of the following is an example of a homogeneous mixture?

• Salad

• Saltwater

• Sand and gravel

• Oil and water