Chemistry assignments, Schemes and Mind Maps of Chemistry

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2024/2025

Uploaded on 08/08/2025

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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.
🔬 Magnesium (Mg) Chemistry – IGCSE Summary
🔬 1. Basic Information about Magnesium
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
🔬 2. Physical Properties
Lightweight metal
Malleable and ductile
Good conductor of heat and electricity
Burns with a bright white flame
🔬 3. Chemical Properties and Reactions
🔬 a. Reaction with Oxygen
2Mg (s) + O (g) → 2MgO (s)
Burns with a bright white flame
🔬 Magnesium oxide is basic (alkaline):
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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.

🔬 Magnesium (Mg) Chemistry – IGCSE Summary

🔬 1. Basic Information about Magnesium

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

🔬 2. Physical Properties

 Lightweight metal  Malleable and ductile  Good conductor of heat and electricity  Burns with a bright white flame

🔬 3. Chemical Properties and Reactions

🔬 a. Reaction with Oxygen

2Mg (s) + O₂ (g) → 2MgO (s)  Burns with a bright white flame 🔬 Magnesium oxide is basic (alkaline) :

MgO + H₂O → Mg(OH)₂

🔬 b. Reaction with Acids

Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g)  Effervescence (bubbles) seen due to H₂ gas

🔬 c. Reaction with Water

Cold water : reacts very slowlyHot 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!