| Click on any of the statements below to learn about or review this part of the syllabus. |
| 1.14 know what is meant by the terms atom and molecule |
| 1.15 know the structure of an atom in terms of the positions, relative masses and relative charges of sub-atomic particles |
| 1.16 know what is meant by the terms atomic number, mass number, isotopes and relative atomic mass (Ar) |
| 1.17 be able to calculate the relative atomic mass of an element (Ar) from isotopic abundances |
