Mixtures and Solutions Corrections

1. A mixture of iron filings and chalk dust is placed on a plate. Which of the following could be done to gather the iron filings?

• Pour the mixture into a funnel

• Put the mixture in a pot on the stove

• Run a magnet over the mixture

• Filter the mixture through the strainer

2. A packet of trail mix has raisins, nuts, granola, and cranberries. Which statement correctly describes the trail mix?

• The trail mix is a mixture because it contains an equal number of nuts and raisins.

• The trail mix is a mixture because the ingredients dissolve in water.

• The trail mix is a mixture because the ingredients cannot be separated.

• The trail mix is a mixture because the ingredients can be separated easily.

3. A cup of orange juice with pulp is poured into a glass. Which of these procedures could be done to separate the juice from the pulp?

• Pour the juice through a coffee filter.

• Heat the juice in a pot until boiling.

• Pour the juice into another cup.

• Allow the mixture to settle, leaving the pulp at the bottom of the glass.

4. Which of the following mixtures can be separated using a magnet?

• Sand and Salt

• Sand and iron filings

• Sugar and Water

• Saltwater

5. All of these can be separated easily EXCEPT -

• Nuts, bolts and screws

• Powdered drink mix, sugar, and water

• Sand and Water

• Iron Filings and Sand

6. Which mixture can be separated using a filter?

• Sand and Iron filings

• Saltwater

• Sand and Water

• Chocolate milk

7. Which tools are best for separating a mixture of sand, iron filings, and water.

• Hot plate and Filter

• Tweezers and Filter

• Filter and Magnet

• Magnet and Hot plate

8. Which is the appropriate tool to use when recording the steps in separating a mixture?

• Hand Lens

• Strainer

• Calculator

• Science Journal

9. A new student has joined the science class. The student was not present when the class investigated mixtures and solutions. All the following would be good ways for the class to help the student learn about mixtures and solutions EXCEPT—

• develop a model representing mixtures and solutions

• take the student to the library and research mixtures and solutions

• draw an illustration of mixtures and solutions

• give the student a dictionary

10. When separating salt water using a hot plate, what precaution should students use?

• Unplug the hot plate if water splashes on the cord.

• Follow the teacher's instructions and put on safety goggles.

• Leave the hot plate plugged in after the investigation is complete.

• Follow the teacher's instructions and record the results in a science notebook.