5th Grade - All Classes Review (Matter, Magnetism, Electricity)

What two changes below are physical changes?

• Freezing Water

• Rotting Food

• Making Lemonade

• Baking Cookies

What could be a physical change to a piece of candy?

• Melting it

• Freezing it

• Crushing it to smaller pieces

• Adding vinegar to candy and seeing bubbles form

What will the scale read after the reactants mix together?

• More than 300.23g

• Less than 300.23g

• Exactly the same 300.23g

• Error Error Error - Go back to 1st grade

A student weighs a bag with chemicals and records the weight. Then, she mixes the two reactants together in an OPEN plastic bag. Bubbles and fizzing are observed. What should happen with the weight?

• It should decrease

• It should increase

• Colors may change

• It will be the exact same as before

What are two chemical reactions in everyday life?

• Driving a gasoline car

• Toasting bread in the toaster

• Making a peanut butter and jelly sandwich

• Painting your bike red

What could a student prove with this experiment?

• Disc magnets will spin more than bar magnets on strings

• Magnets will line up with the Earth's magnetic field lines

• Bar magnets are better than disc magnets

• Bar magnets are weaker than disc magnets

What is shown in this picture?

• Xray

• Cursive "U"

• Magnets repel and attract each other

• Magnetic field lines

Without the Earth's magnetic field, would a compass work?

• No - Never

• Yes - Always

• Sometimes

• No one really knows

If you magnetize a needle (line up the domains) with a strong magnet, what have you made?

• Permanent magnet

• Temporary magnet

• A knitting tool

• A part of a homemade compass

True or False: Electromagnets have a north and south pole.

• True

• False