module 2.1 - atoms and reactions

Question 1

weighted mean mass of an atom of an element compared to 1/12 of the mass of a carbon-12 atom

Answer 1

relative atomic mass

Question 2

the smallest whole number ratio of atoms of each element in a compound

Answer 2

empirical formula

Question 3

the actual number of atoms of each type of element in a molecule

Answer 3

molecular formula