1.describe the interaction that occurs between two objects with the same electrical charge. 2.how does the amount, or magnitude, of charge on an object affect its attraction or repulsion of another object? 3.compare how a positively charged object and a negatively charged object interact with a neutral object. 4.what happens to the composition of an atom to cause it to become positively or negatively charged? 5.if you rub a balloon on a piece of fabric or carpeting and then hold it against your head, your hair can stand on end. use what you have learned in this lesson to explain why this happens.

1.Describe the interaction that occurs between two objects with the same electrical charge.

The objects will repel each other.

2.How does the amount, or magnitude, of charge on an object affect its attraction or repulsion of another object?

The attracion of repulsion is proportional to the product of the magnitude of the charges. Then if the amount of charge of one object is doubles, triples, ... the magnitude of the attraction or repulsion force will double, triple ...

3.Compare how a positively charged object and a negatively charged object interact with a neutral object.

It can happen that the charged object induces a separation of the charges inside the neutral object causing attraction between the charged object and the neutral object.

4.What happens to the composition of an atom to cause it to become positively or negatively charged?

Excess of electrons (more electrons than protons) cause the atom to become negatively charged. Excess of protons (more protons than electrons) cause the atom to become positevely charged.

5.If you rub a balloon on a piece of fabric or carpeting and then hold it against your head, your hair can stand on end. Use what you have learned in this lesson to explain why this happens.

When these bodies are rubbed they electrize, i.e. acquire charge. This electrization is due to the pass of electrons between the bodies that were rubbed. Then, when you hold the electrized body to your head the first will induce the separation of charges in the hair causing the attraction.

16- counting by fours