Grade 8 Mixtures and Solutions Quiz

Which of the following best describes a homogeneous mixture?

• A mixture where the components are easily distinguishable.

• A mixture that has a uniform composition throughout.

• A mixture that settles over time.

• A mixture that can be separated by filtration.

Which term refers to a mixture that appears uniform but contains larger particles that do not settle out?

• Suspension

• Colloid

• Solution

• Compound

The Tyndall effect is observed in which type of mixture?

• Homogeneous mixtures

• Heterogeneous mixtures

• Solutions

• Pure substances

Which of the following methods is best for separating a solid from a liquid using a barrier?

• Evaporation

• Filtration

• Distillation

• Decantation

What is the process called when a liquid is heated until it turns into vapor, leaving dissolved solids behind?

• Distillation

• Filtration

• Decantation

• Evaporation

Which technique would you use to separate a mixture of liquids based on their different boiling points?

• Filtration

• Chromatography

• Distillation

• Magnetism

If you want to separate sand from water, which method could you use?

• Centrifugation

• Decantation

• Filtration

• Chromatography

In which method are substances separated based on their solubility and movement through a medium?

• Distillation

• Filtration

• Chromatography

• Centrifugation

What is the primary principle behind centrifugation as a separation technique?

• Differences in boiling points

• Differences in density

• Differences in particle size

• Differences in solubility

Which of the following methods can be used to separate iron filings from a mixture of sand and iron?

• Filtration

• Magnetism

• Distillation

• Centrifugation