Electrostatic Series

Levi rubs a piece of wool and an ebonite rod together; the ebonite rod will become positively charged.

• True

• False

Answer explanation

Ebonite is at the bottom of the Electrostatic Series - it loves electrons! It will therefore become NEGATIVELY charged.

You rub some silk and a grocery bag together. Which will become positively charged? Which will become negatively charged?

• Silk will be positive.

  Grocery bag will be negative.

• Grocery bag will be positive.

  Silk will be negative.

• Silk will stay neutral. Grocery bag will be positive.

• Both will stay neutral.

Answer explanation

The grocery bag is LOWER on the Electrostatic Series and will steal the electrons from the silk.

When a material has less electrons than protons, it is...

• Neutral

• Positively charged

• Negatively charged

• That's not possible

When a material has more electrons than protons, it is...

• Positively charged

• Negatively charged

• Neutral

• None of the above

When a material has an equal number of protons and electrons, it is...

• Positively charged

• Neutral

• Negatively charged

• Supercharged

Protons can move and electrons cannot.

• True

• False

When do two materials REPEL each other?

• When they have opposite charges.

• When they both have the same number of protons.

• When they have the same charge.

• When they are both neutral.

Polyester will steal electrons from nylon if they are rubbed together.

• True

• False

Answer explanation

Polyester is LOWER on the Electrostatic Series than nylon.

How do you make something negative?

• Add protons to it.

• Take protons away from it.

• Add electrons to it.

• It's impossible.

Which material will LOSE electrons if lucite and wool are rubbed together?

• Ice cream

• Lucite

• Wool

• Ms. Gilmour

Answer explanation

Wool is higher on the Electrostatic Series than lucite.