There is a net amount of negative charge on both pieces

There is a net amount of charge on both pieces

There are more negative charges on one piece than the other.

There is a net amount of positive charge between both pieces

There is a net amount of negative charge between both pieces

There is a net amount of charge between both pieces

There is an imbalance of positive and negative charges between both pieces.

Opposite charges attract, while same charges repel one another

Opposite charge repel, while same charges attract one another

Positive charges attract both negative and positive charges

Negative charges attract both negative and positive charges.

Positive

Negative

Neutral

Positive

Negative

Neutral

Free electrons are easily transferred between the atoms and molecules in materials

Free electrons are difficult to transfer between the atoms and molecules in materials

Free electrons do not have a corresponding (partner) proton and are free to move around.

Free electrons are the amount of excess electrons in a material

...is missing electrons, which have been transferred to the cloth

...gained protons from the cloth.

...gained electrons from the cloth

...charging by contact

...charging by induction

...polarization of charge

...grounding

...charging by contact

...charging by induction

...polarization of charge

...grounding

...charging by contact

...charging by induction

...polarization of charge

...grounding

....charging by contact

...charging by induction

...polarization of charge

...grounding

Coulombs

Newtons

Volts

Joules

the charge of an single electron

the charge of a single proton

the charge of $$6.24\ \cdot\ 10^{18}$$  electrons

-e

+e

0

-e

+e

0