Metals and non-metals
In some periodic tables there is a dark zigzag line that separates the metal elements from the non-metal elements.
To the left of the zigzag line are the metals and on the right hand side of the zigzag line are the non-metals.
Covalent bondingMetals and non-metals
A covalent bond is a shared pair of electrons. Covalent bonding results in the formation of molecules or giant structures. Substances with small molecules have low melting and boiling points and do not conduct electricity. Giant covalent substances have very high melting points.
Part ofScienceProperties and uses of substances
