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Chemistry assignments and important questions
Typology: Schemes and Mind Maps
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Great! Let’s go through Magnesium (Mg) Chemistry as covered in IGCSE Chemistry. Magnesium is a Group 2 metal (alkaline earth metal) with many uses and important reactions.
Property Description Symbol Mg Atomic number 12 Group Group 2 (alkaline earth metals) Appearance Shiny silver-grey metal State at room temp Solid Reactivity Moderately reactive metal
Lightweight metal Malleable and ductile Good conductor of heat and electricity Burns with a bright white flame
2Mg (s) + O₂ (g) → 2MgO (s) Burns with a bright white flame 🔬 Magnesium oxide is basic (alkaline) :
MgO + H₂O → Mg(OH)₂
Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g) Effervescence (bubbles) seen due to H₂ gas
Cold water : reacts very slowly Hot water/steam : reacts more readily Mg + H₂O (g) → MgO + H₂ 🔬 4. Magnesium Compounds Compound Formul a Use / Property Magnesium oxide MgO Basic; used in lining furnaces Magnesium hydroxide Mg(OH) ₂ Weak base; antacid and laxative Magnesium sulfate MgSO₄ Used in medicine (Epsom salt) Magnesium carbonate MgCO₃ Found in chalk, toothpaste 🔬 5. Flame Test Magnesium compounds do not give a characteristic color in flame tests (too bright). When metal Mg burns , it gives a bright white flame , forming white ash (MgO).
Property / Reaction Details water steam MgO and Mg(OH)₂ Alkaline/basic in nature Key uses Alloys, medicine, fireworks Would you like: A short quiz on magnesium chemistry? A comparison between magnesium and other metals (like calcium or zinc)? A PDF revision note? Let me know how you want to continue!