#C2.2a
describe metals and non-metals and explain the differences between them on the basis of their characteristic physical and chemical properties
physical properties, formation of ions and common reactions, e.g. with oxygen to form oxides
#C2.2b
explain how the atomic structure of metals and non-metals relates to their position in the Periodic Table
#C2.2c
explain how the position of an element in the Periodic Table is related to the arrangement of electrons in its atoms and hence to its atomic number
group number and period number
#C2.2d
describe and compare the nature and arrangement of chemical bonds in:
i. ionic compounds
ii. simple molecules
iii. giant covalent structures
iv. polymers
v. metals
#C2.2e
explain chemical bonding in terms of electrostatic forces and the transfer or sharing of electrons
#C2.2f
construct dot and cross diagrams for simple covalent and binary ionic substances
#C2.2g
describe the limitations of particular representations and models
dot and cross diagrams, ball and stick models and two- and three-dimensional representations
#C2.2h
explain how the reactions of elements are related to the arrangement of electrons in their atoms and hence to their atomic number
#C2.2i
explain in terms of atomic number how Mendeleev’s arrangement was refined into the modern Periodic Table