Extra Credit Study Guide-Science TFAR

Which physical property of the sugar is used to make the solution?

• Density

• Solubility

• Mass

Joanna put salt, sugar, water, and rocks in a cup. Then she shook the cup. When she finished, Joanna could see the rocks and water but not the sugar or salt. Which statement about the materials in the cup is true?

• The water is part of Joanna’s solution and her mixture.

• The rocks are part of Joanna’s solution but not her mixture.

• Joanna did not make a solution or a mixture

What happens when water in a pot reaches its boiling point?

• The water begins to increase in mass

• The water changes color

• The water begins to evaporate.

Which physical property would you depend upon to easily separate paper clips from sand?

• Magnetism

• Solubility in water

Which objects are electrical insulators?

• eraser, toothpick, cotton ball

• paper clip, safety pin, foil

Why is a solution a special kind of mixture?

• The substances in a solution have been broken into individual particles that cannot be seen

• The substances in a solution cannot be physically separated.