Atomic Structure

Question 1

Proton

Answer 1

Has the mass of 1 and charge of +1

Is also referred to the Atomic Number.

Is in the nucleus of an atom.

Question 2

Electron

Answer 2

Has the mass of 1/1890 and a charge of -1

An atom has equal amounts of Protons and Electrons as this is what makes the atom have a no charge (they cancel each other out.)

But in ions, the amount of Protons and Electrons can be different.

Is found in the shells of an atom.

Question 3

Neutron

Answer 3

Has the Mass of 1 and charge of 0.

The Atomic mass number - the atomic number( protons) will give the amount of neutrons of an atom.

Found in the nucleus of an atom.

Question 4

Isotopes

Answer 4

When an element has the same number of protons but a different number of neutrons.

They have the same atomic number but different mass numbers.

Question 5

How to calculate Relative Atomic Mass?

Answer 5

Ar = total mass of atoms / total number of atoms (which is generally 100)