Science Unit 2 Review

A magnet would most useful in separating...

• Salt and Water

• Rocks and Soil

• Iron Filings and Sand

Group A mixed salt and warm water, while Group B mixed sugar and warm water. How are the mixtures the same?

• Both mixtures change color

• Both waters get cooler

• A solid dissolves in water

Which of the following mixtures can be separated using a sieve?

• Nuts and Raisins

• Sand and gravel

• Salt and Pepper

Which of the following mixtures can be separated with a magnet?

• Aluminum cans and iron cans

• Plastic cups and paper cups

• Wooden blocks and plastic blocks

• Pencil lead and rubber erasers

Which mixture can be separated easily by pouring it through a paper towel.

• Milk and water

• Sand and water

• Salt and water

• Juice and water

A mixture is...

• a combination of two or more materials

• a combinations of ten or more materials

• no combination of materials

A solution is...

• easily separated

• where one item is dissolved into another

• fruit salad

What does a mixture of rocks and water have in common with a mixture of salt and water? In both mixtures-

• two substances are combined

• a solid is dissolved into a liquid

• the same substances are used