Electricity and Atomic Structure

What is electricity defined as at its most basic level?

• A flow of electric charge

• A type of magnetism

• A form of light

• A kind of sound

Electrons are tiny particles with what type of charge?

• negative charge

• positive charge

• neutral charge

• no charge

What is produced when electrons move from one location to another through a conducting wire?

• Electric current

• Light

• Sound

• Heat

What charge do protons have?

• Protons have a positive charge.

• Protons have a negative charge.

• Protons have no charge.

• Protons have a variable charge.

More than 99% of the mass of an atom is contained within which part of the atom?

• nucleus

• electron cloud

• valence shell

• atomic orbitals

What is a characteristic of a good conductor of electricity?

• It has a tightly bound electron in the outer ring.

• It has a lone electron in the outer ring.

• It has no electrons in the outer ring.

• It has multiple electrons in the outer ring.

Which of the following are examples of good conductors of electricity?

• A) Copper and silver

• B) Glass and wood

• C) Rubber and plastic

• D) Sulfur and silicon dioxide

Fill in the blank: Insulators protect people from electrical shock and equipment and structures from _________.

• catching fire.

• overheating.

• rusting.

• freezing.

Insulators, such as sulfur, require more force to cause electrons to move because:

• they have a high density of free electrons.

• they have tightly bound electrons.

• they have a crystalline structure.

• they have a high thermal conductivity.

List some examples of naturally occurring insulators mentioned in the text.

• Wood, rubber, glass

• Copper, aluminum, gold

• Iron, steel, nickel

• Water, air, oil