Exploring Mixtures and Solutions Quiz

Which of the following is a pure substance?

• Salt water

• Distilled water

• Air

• Soil

What is the main difference between a homogenous mixture and a heterogenous mixture?

• Homogenous mixtures have visible parts, heterogenous mixtures do not

• Homogenous mixtures are made of only one substance

• Homogenous mixtures have a uniform composition throughout, heterogenous mixtures do not

• Heterogenous mixtures are always liquids

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

• Salad

• Muddy water

• Salt dissolved in water

• Sand and iron filings

In a solution of sugar and water, what is the solvent?

• Sugar

• Water

• Both sugar and water

• Neither sugar nor water

What does the concentration of a solution refer to?

• The amount of solvent present

• The amount of solute dissolved in a given amount of solvent

• The temperature of the solution

• The colour of the solution

Which of the following is NOT a method used to separate mixtures?

• Evaporation

• Distillation

• Melting

• Chromatography

What is the main purpose of evaporation in separating mixtures?

• To separate two liquids

• To separate a dissolved solid from a liquid

• To mix two substances together

• To cool down a mixture

Which technique would you use to separate a mixture of two liquids with different boiling points?

• Filtration

• Distillation

• Chromatography

• Sieving

Which of the following best describes a colloid?

• A mixture where particles settle out quickly

• A mixture with large, visible particles

• A mixture where particles are evenly dispersed and do not settle

• A pure substance

Which of the following is an example of a suspension?

• Milk

• Salt water

• Muddy water

• Air