States of matter are the different forms we find elements, compounds and mixtures in the periodic table as solids liquids and gases.
Physical properties of a substance are a way of measuring different features of that element or compound and classifying them.
Giant covalent structures exist when many atoms are covalently bonded in a large structure.
Ionic compounds have a number of properties due to their bonding, they are brittle, non conductive as a solid and have high melting and boiling points.
The transition metals is a term given to the group of metals that occupy the centre of the periodic table. They are known as the transition elements as they bridge the gap between group 2 and 3. They are all metals, form coloured compounds and can act as catalysts with variable oxidation states.