Summary Section 1 - thank you Paula Prieto

Energy can change.

Everything in nature is made of atoms, which contain tiny particles called protons and electrons. Protons have got a positive change and electrons have got a negative one.

When there is a equal number of protons and electrons in a object, we say that those object is electrically charged.

Electrons can move and change. It can move from one object to another and they can change.

There is a force of attraction between objects that have got opposite electric changes .

There is a force of repulsion between objects that have got identical energy changes.

We can do an example of those types of energy with two balloons.