Atomic Structure

What are all substances made up of?

Atoms

What is a substance with only one type of atom?

an element

What is a protons relative mass, charge and position

mass/ 1 charge +1 and in the nucleus

What is a neutrons relative mass, charge and position

mass/1 charge 0 in the nucleus

What is a electrons relative mass, charge and position

mass = 1/ 1836 charge -1 in shells around the nucleus

What is meant by atomic number?

number of protons ( number of electrons if it’s an atom because atoms are neutral

What is meant by mass number?

number of protons and neutrons

What are isotopes?

different atoms of elements that have that have the same number of protons but different number of neutrons in a nuclei

What is the relative atomic mass of an element?

The weighted average mass of an elements mass including all isotopes

What is the formula for finding out the relative atomic mass of an element?

(mass of Isotope A x % of isotope A) + (mass of isotope B x % of Isotope B) divided by 100