Atomic structure and isotopes

Question 1

What is an isotope?

Answer 1

Atoms of the same element with the same number of protons and electrons but different numbers of neutrons

Question 2

What causes different chemical properties?

Answer 2

Different number of electrons

Question 3

Define relative atomic mass?

Answer 3

weighted mean mass of an atom of an element relative to 1/12th the mean mass of an atom of carbon - 12

Question 4

Define relative isotopic Mass?

Answer 4

the isotopic mass of an isotope relative to one twelfth of the mean mass of an atom of the carbon - 12 isotope