What is a mixture?

• A substance made of two or more elements chemically combined.

• A combination of two or more substances that are not chemically combined.

• A single substance with a fixed composition.

• A solution with a uniform composition.

What is a solution?

• A mixture where substances are evenly distributed.

• A combination of two or more substances that can be easily separated.

• A mixture with visible different parts.

• A single element in its pure form.

Which of the following is an example of a mixture?

• Saltwater

• trail mix

• cereal

• water

Which of the following is an example of a solution?

• Sand and water

• Oil and vinegar

• Sugar dissolved in water

• Iron filings and sulfur

Which of the following is NOT a characteristic of a mixture?

• Components retain their individual properties.

• Components are chemically combined.

• Components can be separated by physical means.

• Components can be present in any proportion.

Which method would you use to separate a solution of saltwater?

• Filtration

• Evaporation

• Magnetism

• Decanting

Which of the following is a homogeneous mixture (solution)?

• Salad

• Soil

• Vinegar

• Trail mix

Which of the following is a heterogeneous mixture (mixture)?

• Milk

• Orange juice with pulp

• Saltwater

• Brass

Why is air considered a mixture?

• It is made of a single element.

• It has a fixed composition.

• It is a combination of gases that are not chemically combined.

• It is a pure substance.

Which of the following best describes a solution?

• A mixture with visible different parts.

• A mixture where one substance is dissolved in another.

• A mixture that can be separated by a magnet.

• A mixture that can be separated by filtration.