Halide Ion Reactions Concentrated sulfuric acid Chloride, bromide and iodide ions react with concentrated sulfuric acid to produce toxic gases These reactions should therefore be carried out...
Halogen Redox Reactions Reactions with Group 1 & 2 metals The halogens react with some metals to form ionic compounds which are metal halide salts In all reactions where halogens are rea...
Halogen Displacement Reactions The reactivity of halogens is also shown by their displacement reactions with other halide ions in solutions A more reactive halogen can displace a less reacti...
Physical Properties The Group 7 elements are called halogens The halogens have uses in water purification and as bleaching agents (chlorine), as flame-retardants and fire extinguishers (brom...
Flame Tests Metal ions produce a colour if heated strongly in a flame Ions from different metals produce different colours The flame test is thus used to identify metal ions by the colour of...
Group 2 Carbonates & Nitrates Thermal decomposition is the breakdown of a compound into two or more different substances using heat Thermal decomposition of carbonates The Group 2 carbon...
Group 2 Hydroxides & Sulfates Group 2 hydroxides Going down the group, the solutions formed from the reaction of Group 2 oxides with water become more alkaline When the oxides are dissol...
Group 2 Elements Reactions with water and oxygen The reaction of group 2 metals with oxygen follows the following general equation: 2M (s) + O2 (g) → 2MO (s) Where M is any metal in group 2 ...
Ionisation Energy Chemical trends All elements in Group 2 (also called alkali earth metals) have two electrons in their outermost principal quantum shell All Group 2 metals can form ionic co...
