Atoms

Question 1

Relative Isotopic Mass

Answer 1

The mass of the isotope compared to 1/12th of the mass of carbon-12.

Question 2

Relative Atomic Mass

Answer 2

The weighted mean mass of an atom relative to 1/12th of one atom of carbon-12.

Question 3

Atomic Mass

Answer 3

The number of protons in the nucleus.

Question 4

Isotopes

Answer 4

Atoms of the same element OR sane atomic number OR number of protons

AND with different number of protons OR different masses.