Physical & Chemical Changes
Static Electricity
100

Which of the following is a physical change?

A Change a sheet of paper by cutting it into a snowflake.

or B  Freeze a cup of water

or D both

What is the answer D both?


100

Two objects have collected static electricity with the same change.  What would the objects do when placed near each other?

  1. repel

  2. attract

  3. nothing

  4. stick together

what is repel

200

Which of these is not a physical change?

  1. Tying a knot in your shoelaces

  2. Burning paper

  3. Dividing a candy bar in half

  4. Peeling an orange

   

what is Burning paper

200

How can you tell when static electricity has been discharged?

  1. Heat is released that can be felt.

  2. Light is released and you can feel a shock.

  3. Static electricity gives off many different colors.

  4. The object begins to spin.

  1. Light is released and you can feel a shock.

300

Which of the following is not an indicator of a chemical change?

  1. Production of gas

  2. Change of size

  3. Change of color

  4. Change in temperature



What is Change of size

300

Which statement describes a difference between static electricity and electric current?

  1. Only electric current involves energy.

  2. Only electric current involves movement of electrons.

  3. Only static electricity involves sudden electric discharges.

  4. Only static electricity involves negative and positive charges.

  1. Only static electricity involves sudden electric discharges.

400

Which is an example of a chemical property?

  1. The color of a substance

  2. The texture of a substance

  3. Whether a substance can rust

  4. Whether a substance feels cold

What is Whether a substance can rust

400

Which form of static electricity is dangerous?

  1. Rubbing a balloon with your hair

  2. Rubbing your feet on the carpet and touching someone

  3. Not putting a dryer sheet in your dryer

  4. Lightning

what is lightning


500

Why is adding vinegar to baking soda a chemical change?

  1. It makes a new substance.

  2. It’s fun to watch.

  3. It isn’t a chemical.

  4. Vinegar is an acid.

It makes a new substance.

500

Why might a sock stick to a sweater when you take them out of a dryer?

  1. Both items are dry.

  2. The sock and the sweater have opposite charges.

  3. An electric current flows between the sock and the sweater.

  4. An electric current reduced the number of electrons in both items.

The sock and the sweater have opposite charges.

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