Periodic Table The Periodic table is a method of classifying elements. They are arranged in order of increasing atomic number. The columns are called groups. The rows are called periods. Metals are to the left and non-metals are to the right. Elements in the same...
Periodic trends Non-metals are on the right side of the periodic table, and metals are on the left. If you go down a period of metals (but not the transition metals) they become more reactive (this is because there are more electron shells so since metals lose...
Group properties Alkali metals (only lithium, sodium and potassium for IGCSE): Physical properties: -Good conductors of heat and electricity. -Are soft, compared to other metals. -They have low densities (for metals). -They have low melting and boiling points compared...
Transition elements A collection of metals with the following properties: -hard, tough and strong -high melting points (except mercury) -malleable (can be hammered into different shapes) and ductile (can be drawn out into wires) -good conductors of heat and...
Noble gases Noble gases are unreactive, (also non metals, colourless gases and monatomic). Uses: Helium- filling balloons and aircrafts because it is lighter than air and will not catch fire. Argon – filling (tungsten) light bulbs to stop the filament reacting with...