Inorganic Analysis

• All group 2 carbonates are insoluble
• All group 2 nitrates are soluble
• Sulphates for group 2 the solubility decreases going down the group
• Group 2 hydroxides solubility increases down the group
• Group 2 thermal stability - carbonates and hydroxides can be decomposed by heat, more stable to heat as you go down the group
• Calcium carbonate is found in rocks
• Calcium phosphate is essential in bone tissue
• Calcium and Magnesium essential for all living things
• Group 1 and group 2 metals reacting with water form hydroxides
• Group 1 and 2 form oxides with oxygen
• Magnesium reacts slowly with water and forms an oxide with steam
• Oxides/hydroxides are basic and react with acids to form a salt and water
• All group 1 salts are soluble in water
• In both groups reactivity increases going down the group
• Lithium- Red flame
• Sodium- yellow flame
• Magnesium- No colour
• Potassium- lilac flame
• Calcium- brick red flame
• Strontium- crimson flame
• Barium- apple green flame