Elements

Question 1

What is an element

Answer 1

A substance made up of atoms that all have the same number of protons in their nucleus

Question 2

What are isotopes

Answer 2

Different forms of the same element which have the same number of protons but different numbers of neutrons
(Same atomic number but different mass number)

Question 3

How to find out the relative atomic mass (isotopes)

Answer 3

Ar = sun of (isotope abundance * isotope mass number) / sun of abundances of all the isotopes