Building Electric Charge

Building Electric Charge

How does matter build up electric charge?

Friction Causes Electric Charge

• Friction between two objects can rub electrons off of ato

• Electrons are the only parts of the atom that move.

• They are on the outside of the atom - the part that the force of friction affects.

• Friction does not cause protons or neutrons to move from atom to atom

Multiple Choice

Which force causes the build up of electric charge?

• push

• gravity

• friction

Multiple Choice

Which subatomic particle is rubbed off atoms by the force of friction?

• electron

• neutron

• proton

Electric Force

• Acts Like Magnetic Poles

• Opposites Attract (Pull Together) - Positive & Negative

• Likes Repel (Push Apart) - Positive & Positive or Negative & Negative

• Charges must be unbalanced to see electric force

Multiple Choice

Electric force acts like what other force?

• strong

• magnetic

• gravitational

• solar

Multiple Choice

What do two positive charges do?

• attract

• repel

Multiple Choice

What does a positive and negative charge do?

• attract

• repel

Neutral Matter

• Number of Protons EQUALS Number of Electrons

• Each + cancels each -

• Electric Charges are Balanced

• Most Objects are Neutral - No Electric Force (No Attraction or Repulsion)

Multiple Choice

When an atom has an equal number of positive protons and negative electrons, it is

• balanced

• unbalanced

• heavy

• growing

Multiple Choice

Most matter has what charge?

• positive

• neutral

• negative

Multiple Choice

When matter is neutral, it has no electric force.

• True

• False

Positive Charge

• More + Protons than - Electrons

• Loses Electrons

• Unbalanced Charges

• Has Electric Force (Can Attract Negatives and Repel Positives)

Multiple Choice

How can an atom have an overall positive charge?

• looses electrons

• gains electrons

• keeps all electrons

Multiple Choice

When an atom has an overall positive charge, it has more

• protons than neutrons

• protons than electrons

• electrons than neutrons

• electrons than protons

Multiple Choice

To have an overall positive charge, an atom must be

• balanced

• unbalanced

• heavy

• growing

Negative Charge

• More - Electrons than + Protons

• Gains Electrons

• Unbalanced Charges

• Has Electric Force (Can Attract Positives and Repel Negatives)

Multiple Choice

How can an atom have an overall negative charge?

• looses electrons

• gains electrons

• keeps all electrons

Multiple Choice

When an atom has an overall negative charge, it has more

• protons than electrons

• protons than neutrons

• neutrons than electrons

• electrons than protons

Multiple Choice

To have an overall negative charge, an atom must be

• balanced

• unbalanced

• heavy

• growing

Multiple Choice

How will electric force affect a positively charged atom and a negatively charged atom?

• attract them

• repel them

Multiple Choice

How will electric force affect a positively charged atom and another positively charged atom?

• attract them

• repel them