Halogens: Group 17. Reactive. All halogens exist as diatomic molecules. • Characteristics: Fluorine is yellow gas. Chlorine is green gas. Bromine is red/ brown liquid. Iodine is grey solid. • Boiling Point Increases Down: - As you go down the group, greater number of...
Quantitative Analysis: Example is titration. • Qualitative Analysis: Relies on observations. • Test for Anions: Carbonate, sulphate and halide. • Carbonate and Acids: Carbonates react with acids to form carbon dioxide. Na2CO3 (aq) + 2HNO3 (aq) -> 2NaNO3 (aq) + CO2...
Group 2: Aka alkaline earth metals. • Redox Reactions: They are the most common type of reaction of Group 2 elements. Each metal atom is oxidised, losing two electrons to form a X2+ ion- the same electron configuration as noble gas. Another species will gain these two...