Mixtures and Solutions 4th grade, MH

A mixture combines 2 or more materials without changing their properties.

• True
• False

Solutions are formed when one or more substances dissolve in another.

• True
• False

Which of the following is NOT a way to separate a mixture?

• Heat a liquid to evaporate the liquid out of a solution.
• Use a magnet to separate sand particles and rocks.
• Use a filter to allow liquid to flow through and leave behind the solid particles on top of the filter.
• Use tongs to separate the parts of a salad.

Mrs. Ellis has a beaker of sugar and water. What is the fastest way to separate the solution?

• Use a magnet
• Pour the solution through a filter
• Boil the solution
• Sit the container in a window and wait for water to evaporate

Sally made four cups of water. She added different material in each cup and stirred it. Which of the following will form a solution with the water?

• Sugar
• Sand
• Salad oil

The 4th grade class are observing 4 beakers in a Science lab. Which of the following students made a true statement comparing the materials in the beakers. 
Beaker 1-sand and water
Beaker 2-sugar and water
Beaker 3-rocks and sand
Beaker 4-rocks and water

• All beakers have a mixture of solids.
• Beakers 1and 2 have a mixture of solids and liquids. They can both be separated with a filter.
• Beakers 1,2, and 4 are all mixtures of solids and liquids.Beaker 2 can only be separated using heat.
• Beakers 3 and 4 are a mixture of solids and liquids.

Which two tools would a student use to measure the length and mass of a gummy bear?

• graduated cylinder and balance
• stopwatch and meter stick
• ruler and a meter stick
• balance and a meter sick

A pair of students are discussing if a jar containing peanuts, pecans, and walnuts is a mixture. The student's ideas are listed below.

Student 1- "All of the items are nuts. The jar does not contain a mixture."

Student 2 - "There are different kinds of nuts in the jar. They make a mixture."

Which student provides the best explanation?

• Student 1 has the best explanation because all of the items are nuts.

• Student 1 has the best explanation because the nuts are the same size.

• Student 2 has the best explanation because the nuts are not all the same kind.

• Student 2 has the best explanation because the nuts are the same color.

A student puts metal paper clips, metal screws, and metal washers into a container. Which of the following best describes these materials?

• mixture

• plastic

• liquid

• magnets

TRUE or FALSE

A Plastic Ball, a Paperclip, a Wood Block and a Glass Marble put together in a bowl is a mixture.

• True

• False