Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format:
Specification Point 1.14 - Know what is meant by the terms atom and molecule.
Specification Point 1.15 - Know the structure of an atom in terms of the positions, relative masses and relative charges of subatomic particles.
Specification Point 1.16 - Know what is meant by the terms atomic number, mass number, isotopes and relative atomic mass (Ar).
Complete set of Chapter 2 Lessons are available.
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