Chemistry (AS Level)·Group 2 · NSSCAS 3.2
Group 2: The Alkaline Earth Metals
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Group 2 — magnesium to barium — shows beautifully regular trends. Learn how reactivity with oxygen, water and acids increases down the group, how the oxides, hydroxides and carbonates behave, how thermal stability of the nitrates and carbonates changes, the solubility trends of the hydroxides and sulfates, and the important agricultural uses of calcium compounds.
What you'll learn in this lesson
By the end you should be able to (NSSCAS Chemistry (AS Level) 3.2):
- Describe the physical trends down Group 2, including melting points
- Describe the reactions of the elements with oxygen, water and dilute acids
- Describe the behaviour of the oxides, hydroxides and carbonates with water and dilute acids
- Describe the thermal decomposition of the nitrates and carbonates
- Describe the solubility trends of the hydroxides and sulfates, and the agricultural uses of calcium compounds
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