Topic 1 - Isotopes and Relative Atomic Mass

Question 1

what is an isotope?

Answer 1

isotopes are different atomic forms of the same element, which have the same number of protons but different numbers of neutrons

Question 2

do isotopes have the same proton number?

Answer 2

yes, but different mass numbers

Question 3

what is relative atomic mass?

Answer 3

the average mass of all the isotopes of an element

Question 4

how do you calculate relative atomic mass?

Answer 4

1. multiply the mass of each isotope by its relative abundance
2. add them together
3. divide by the sum of the relative abundance