(8th AP Science) Chapter 20.1: Electric Charge and Static Electricity

Study set for “Physical Science for Realize” - Chapter 20.1

Electric Charge

a property that causes subatomic particles (protons and electrons) to attract or repel each other

Two Types of Electric Charges

positive and negative

Protons have ___________ charge.

positive (+)

Electrons have ___________ charge.

negative (-)

Electric charges are too _____ to see.

small

Atoms have neutral charge when...

there is an equivalent number of positive and negative charges

Atoms have positive charge when...

there is a lose of electrons

Atoms have negative charge when...

one or more electrons are gained

Net Electric Charge

produced by an excess or shortage of electrons

What unit is electric charge measured with?

Coulombs (C)

Electric Forces

the force of attraction or repulsion between electrically charged objects

French scientist that discovered Coulomb’s Law

Charles-Augustin de Coulomb

Electric forces obey a law similar to what?

The law of universal gravitation

Inside of an atom, ________ forces are stronger than gravitational forces.

electric

Electric forces create what kind of bonds?

Chemical

Electric forces create ______ forces on small scales.

contact

Electric forces are close to _____ on larger scales.

zero

The effect an electric charge has on _______ in the space around it is the charge’s electric field.

other charges