Group 2: Physical & Chemical Trends Chemical trends All elements in Group 2 (also called alkali earth metals) have the two electrons in their outermost principal quantum shell All Group 2 metal...
Group 2: Thermal Decomposition of Nitrates & Carbonates Thermal decomposition is the breakdown of a compound into two or more different substances using heat Thermal decomposition of carbonates...
Reactions of Group 2 Oxides, Hydroxides & Carbonates Reactions of Group 2 oxides with water All Group 2 oxides are basic, except for BeO which is amphoteric (it can act both as an acid and base...
Reactions of Group 2 Elements The Group 2 elements react with oxygen, water and dilute acids Group 2 reactions table Group 2 reactions with oxygen & water chemical equations Group 2 reactions w...
Periodicity: Predicting Position & Properties If the chemical and physical properties of an element are known, the position of that element in the Periodic Table can be predicted Similarly, pre...
Bonding in Period 3 Chlorides & Oxides Period 3 chlorides The bonding and structure of the Period 3 elements are summarised in the table below: The table shows that Na, Mg and Al are metallic e...
Period 3: Trends in Electronegativity & Bonding Electronegativity Electronegativity is the power of an element to draw the electrons towards itself in a covalent bond Going across the period, t...
Reaction of Period 3 Chlorides & Water Chlorides of Period 3 elements show characteristic behaviour when added to water which can be explained by looking at their chemical bonding and structure...
Acid / Base Behaviour of Period 3 Oxides & Hydroxides Period 3 oxides Aluminium oxide is amphoteric which means that it can act both as a base (and react with an acid such as HCl) and an acid (...
