Spec 1PH0
Revise Edexcel GCSE Physics 6.1.1 Structure of the atom with the question bank and revision guides.
Describe an atom as a positively charged nucleus, consisting of protons and neutrons, surrounded by negatively charged electrons, with the nuclear radius much smaller than that of the atom and with almost all of the mass in the nucleus. • Recall the typical size (order of magnitude) of atoms and small molecules.
