A Free worksheet with answers on balancing chemical equations.

for GCE/GCSE O’ Level Atomic Structure Notes and Worksheet with answers. Students will be able to learn and practice knowledge concerning : relative charges and approximate relative masses of a proton, a neutron and an electron drawing the structure of an atom as containing protons and neutrons (nucleons) in the nucleus and electrons arranged in shells (energy levels) (not including s, p, d and f) interpreting and use symbols for atoms Isotopes deduce the numbers of protons, neutrons and electrons in atoms and ions given proton and nucleon numbers the formation of ions (introduction) and drawing of the electronic structure of ions

Designed for GCE/GCSE O’ Level Introduction to the discovery of the atom Atomic structure Relative charges of sub-atomic particles. Symbolic representation of elements Electronic Structure Introduction to formation of Ions Includes link to good youtube videos