Mixtures and Separating Mixtures

What are the methods of separating mixtures?

• sublimation

• filtration, distillation, evaporation, chromatography, and magnetism

• centrifugation

• decantation

What is a homogeneous mixture?

• A homogeneous mixture is a mixture that has a uniform composition throughout.

• A homogeneous mixture is a mixture that can be separated into its components by physical means.

• A homogeneous mixture is a mixture that contains only one type of substance.

• A homogeneous mixture is a mixture that has a non-uniform composition throughout.

What is a heterogeneous mixture?

• A mixture that consists of visibly different substances or phases.

• A mixture that consists of substances that are evenly distributed.

• A mixture that consists of only one substance.

• A mixture that consists of substances that are chemically combined.

What is the process of filtration used for?

• To remove impurities from a substance.

• To separate solid particles from a liquid or gas.

• To mix different substances together.

• To increase the concentration of a substance.

What is the process of evaporation used for?

• To separate mixtures

• To increase the volume of a liquid

• To decrease the temperature of a liquid

• Evaporation is used to convert a liquid into its gaseous state.

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

• False

• Distillation can be used instead

• Filtration can only separate solids from liquids

• True

True or False: Evaporation can be used to separate a mixture of salt and water.

• Evaporation cannot separate salt and water

• False

• True

• Evaporation can only separate salt from water

Which method of separating mixtures would you use to separate a mixture of iron filings and sulfur?

• Filtration

• Evaporation

• Magnetic separation

• Distillation

Which method of separating mixtures would you use to separate a mixture of oil and water?

• Filtration

• Distillation

• Decantation

• Evaporation

What happens to the particles in a homogeneous mixture when it is separated?

• The particles remain evenly distributed throughout the mixture.

• The particles clump together and settle at the bottom.

• The particles evaporate and disappear.

• The particles react with each other and form new substances.