SCIENCE CUMULATIVE

A group of students were experimenting with the physical properties of matter. They combined peppercorn and steel BBs in a beaker. What is the best physical property of matter for the students to use to separate this mixture?

• conductivity

• separation

• magnetism

• dissolve

Look at the chart and answer the question.

• copper

• steel

• aluminum

• wood

• plastic

What part of a pencil would be the best conductor?

• plastic grip

• wood body

• rubber eraser

• metal end

Use the image to answer the question.

• sink or float

• magnetic or non magnetic

• soluble in water

• mass

Why did he pull his hand away from the skillet?

• 
  He pulled away because metal is an insulator of thermal energy and he could not feel the heat.

• He pulled his hand away because metal is a conductor of thermal energy and he could feel the heat.

• He pulled his hand away because he forgot that he does not like eggs.

• He pulled his hand away because metal is a good conductor of electricity and it shocked him.

What would help Alexander with the cast iron skillet on the stove?

• Alexander should put aluminum foil on his hand to touch the pan.

• Alexander should just turn the stove off.

• Alexander should put an oven mitt on his hand to touch the pan.

• Alexander should just throw the pan away.

The students performed tests on the objects. Which of these objects would be attracted to a magnet?

• iron ring

• 
  copper wire

• rubber tubing

• chalk

Which of the objects would be insulators of electricity?

• iron ring and copper wire

• 
  rubber tubing and chalk

• iron ring and chalk

• copper wire and rubber tubing

Choose 2 correct answers.

• The plastic is a conductor of electricity.

• The plastic is an insulator of electricity.

• 
  The metal prongs are an insulator of electricity.

• The metal prongs are a conductor of electricity.

• The metal and plastic in the system do not work.

A student puts five objects in a bucket of water. A metal paper clip, glass marble, rock, wood block, and plastic ball are placed one at a time in the bucket. Which objects are denser than the water?

Select THREE correct answers.

• marble

• nail

• rock

• beach ball

• wood block