What are Mixtures and Solutions?

Adding food coloring to water creates a solution. Which of these properties is true of all solutions?

• They all include water

• They all are evenly mixed

• They are all liquids or gases

• The substances are permanently combined

A magnet is used to separate certain types of mixtures that maintain the physical properties of their ingredients. This type of tool is used to separate what type of mixture?

• a mixture that is a solution

• a mixture that is partly magnetic

• a mixture of particles that have different sizes

• a mixture of particles that are all about the same size

A company collects cans to recycle. Some cans are made of aluminum, and others are made of steel. What physical property should be used to separate and classify the different types of cans?

• size

• shape

• solubility

• magnetism

A mixture contains 1 gram of salt and 2 grams of sugar dissolved in 100 grams of water. What other mixture would have the same physical properties?

• 3 grams of salt, 2 grams of sugar, and 100 grams of water

• 3 grams of salt, 6 grams of sugar, and 400 grams of water

• 4 grams of salt, 6 grams of sugar, and 300 grams of water

• 4 grams of salt, 8 grams of sugar, and 400 grams of water

A pot contains a mixture. A sieve is a tool which can be used to separate which the type of mixture?

• a solution, such as salt water

• a mixture of solid particles with different densities

• a mixture of particles of different sizes, such as seashells and sand

• a mixture of iron, which is magnetic, and copper, which is not magnetic