<think> Thinking Process:

1. Deconstruct the Request:

   • Role: Expert MP Board teacher.
   • Task: Generate a text-based Mind Map (Markdown hierarchical list).
   • Class: 10.
   • Subject: Science.
   • Chapter: Metals and Non-metals.
   • Language: English.
   • Rules: Markdown list, root topic, nested bullets, short punchy text, bold key terms, ONLY Markdown output, no JSON/preamble.

2. Recall/Retrieve Content for Class 10 Science (NCERT/MP Board) Chapter: Metals and Non-metals:

   • Key Topics:
     • Physical Properties of Metals/Non-metals.
     • Chemical Properties of Metals (Reaction with Oxygen, Water, Acids, Displacement).
     • Chemical Properties of Non-metals (Reaction with Oxygen, Acids - usually no reaction).
     • Reactivity Series.
     • Occurrence of Metals (Ores, Minerals, Extraction methods).
     • Metallurgy (Concentration, Conversion to Oxide, Reduction, Refining).
     • Corrosion.
     • Alloys.

3. Structure the Mind Map (Hierarchical Flow):

   • Root: Chapter 3: Metals and Non-metals.
     • Branch 1: Physical Properties.
       • Metals: Malleable, Ductile, Lustrous, Conductors, High MP/BP.
       • Non-metals: Brittle, Non-ductile, Dull, Insulators, Low MP/BP.
       • Exceptions: Mercury (Liquid), Graphite (Conductor).
     • Branch 2: Chemical Properties.
       • Metals:
         • • Oxygen -> Metal Oxides (Basic).
         • • Water -> Oxide/Hydroxide + H2 (Reactivity varies).
         • • Dilute Acid -> Salt + H2.
         • Displacement Reaction (More reactive displaces less).
       • Non-metals:
         • • Oxygen -> Non-metal Oxides (Acidic).
         • • Acids -> No Reaction.
     • Branch 3: Reactivity Series.
       • Order of reactivity.
       • K > Na > Ca > Mg > Al > Zn > Fe > Pb > H > Cu > Ag > Au.
     • Branch 4: Occurrence & Extraction.
       • Minerals vs. Ores.
       • Extraction Steps:
         • Concentration.
         • Conversion (Roasting/Calcination).
         • Reduction (Smelting, Electrolytic).
         • Refining (Electrolytic refining).
       • Specific Metals:
         • Low reactivity (Cu, Hg, Ag, Au) -> Found free or simple heating.
         • Middle reactivity (Zn, Fe, Pb) -> Reduction with Carbon/Coke.
         • High reactivity (K, Na, Ca, Mg, Al) -> Electrolytic reduction of molten chlorides.
     • Branch 5: Corrosion & Alloys.
       • Corrosion: Rusting of Iron (Fe2O3.xH2O), Prevention methods.
       • Alloys: Definition, Examples (Steel, Brass, Bronze, Solder, Duralumin).

4. Draft the Markdown Content (Applying Rules):

   • Rule Check: Short text? Bold terms? Nested bullets?
   • Drafting:

     # Chapter 3: Metals and Non-metals
     
     - **Physical Properties**
       - **Metals**
         - **Malleable**: Hammered into thin sheets
         - **Ductile**: Drawn into thin wires
         - **Lustrous**: Shiny surface
         - **Conductors**: Good heat & electricity
         - **High Melting/Boiling Points**
         - **Hard**: Generally solid
       - **Non-metals**
         - **Brittle**: Break on hammering
         - **Non-ductile**: Cannot form wires
         - **Non-lustrous**: Dull appearance
         - **Insulators**: Poor heat & electricity
         - **Low Melting/Boiling Points**
         - **Soft**: Generally solid/liquid/gas
       - **Exceptions**
         - **Mercury**: Liquid metal at room temp
         - **Graphite**: Non-metal conductor
         - **Sodium/Potassium**: Soft metals cut with knife
     
     - **Chemical Properties**
       - **Metals**
         - **Reaction with Oxygen**
           - Form **Metal Oxides**
           - Oxides are **Basic** in nature
           - `Metal + O₂ → Metal Oxide`
         - **Reaction with Water**
           - **Highly Reactive**: React with cold water (e.g., Na, K)
           - **Moderately Reactive**: React with hot water (e.g., Mg)
           - **Low Reactive**: React with steam (e.g., Fe)
           - **Unreactive**: No reaction (e.g., Cu, Ag)
         - **Reaction with Dilute Acids**
           - Displace Hydrogen
           - `Metal + Acid → Salt + H₂`
           - **Nitric Acid Exception**: No H₂ released (except Mg/Mn)
         - **Displacement Reaction**
           - **More reactive** metal displaces **less reactive** metal from salt solution
       - **Non-metals**
         - **Reaction with Oxygen**
           - Form **Non-metal Oxides**
           - Oxides are **Acidic** in nature
           - `Non-metal + O₂ → Non-metal Oxide`
         - **Reaction with Acids**
           - Do **not** react with dilute acids
     
     - **Reactivity Series**
       - Arrangement of metals in decreasing order of reactivity
       - **Order**: K > Na > Ca > Mg > Al > Zn > Fe > Pb > H > Cu > Ag > Au
       - **Implications**
         - Predicts **displacement reactions**
         - Determines **extraction method**
     
     - **Occurrence & Extraction of Metals**
       - **Minerals**: Naturally occurring compounds of metals
       - **Ore**: Mineral from which metal can be extracted profitably
       - **Concentration**: Removal of impurities (Ore dressing)
       - **Extraction Methods**
         - **Low Reactivity Metals** (Cu, Hg, Ag, Au)
           - Found as **Native metals** or simple heating of sulfides
           - **Roasting**: Heating sulfide ore in excess air
         - **Middle Reactivity Metals** (Zn, Fe, Pb)
           - Found as **Carbonates** or **Sulfides**
           - **Roasting**: Sulfide → Oxide
           - **Calcination**: Carbonate → Oxide
           - **Reduction**: Oxide + **Carbon/Coke** → Metal
         - **High Reactivity Metals** (K, Na, Ca, Mg, Al)
           - Found as **Chlorides**
           - **Electrolytic Reduction**: Molten chlorides decomposed by electricity
       - **Refining**
         - Purification of metals
         - **Electrolytic Refining** (e.g., Copper)
           - **Anode**: Impure metal
           - **Cathode**: Pure metal strip
           - **Electrolyte**: Metal salt solution
           - **Anode Mud**: Insoluble impurities settle
     
     - **Corrosion**
       - Deterioration of metals by reaction with environment
       - **Rusting of Iron**
         - Requires **Oxygen** and **Moisture**
         - Forms **Hydrated Iron Oxide** (Reddish-brown layer)
       - **Prevention Methods**
         - **Painting/Oiling/Greasing**
         - **Galvanization**: Coating with Zinc
         - **Alloying**: Mixing with other metals
         - **Anodizing**: Oxide layer formation
     
     - **Alloys**
       - **Homogeneous mixture** of metals or metal + non-metal
       - **Properties**: Enhanced strength, resistance, appearance
       - **Examples**
         - **Steel**: Iron + Carbon
         - **Brass**: Copper + Zinc
         - **Bronze**: Copper + Tin
         - **Solder**: Lead + Tin (Low MP, electrical joints)
         - **Duralumin**: Al + Cu + Mg + Mn (Aircraft parts)
         - **Amalgam**: Mercury alloy
     

5. Review and Refine:

   • Check against constraints:
     • Markdown list? Yes.
     • Root topic? Yes.
     • Nested bullets? Yes.
     • Short punchy text? Yes.
     • Bold key terms? Yes.
     • Only Markdown? Yes.
     • MP Board context? Yes, covers NCERT syllabus which is the basis for MP Board Class 10 Science. The content is accurate.
     • Hierarchy logical? Yes. Properties -> Chemical -> Reactivity -> Extraction -> Corrosion/Alloys. This is a standard pedagogical flow.

6. Final Output Construction:

   • The drafted text looks solid. I will output exactly that.
   • No preamble. No "Here is the mind map". Just the markdown.

This thought process ensures all constraints are met, content is accurate for the specific board/class, structure is logical, and formatting is correct. </think>

Chapter 3: Metals and Non-metals

• Physical Properties

  • Metals
    • Malleable: Hammered into thin sheets
    • Ductile: Drawn into thin wires
    • Lustrous: Shiny surface
    • Conductors: Good heat & electricity
    • High Melting/Boiling Points
    • Hard: Generally solid
  • Non-metals
    • Brittle: Break on hammering
    • Non-ductile: Cannot form wires
    • Non-lustrous: Dull appearance
    • Insulators: Poor heat & electricity
    • Low Melting/Boiling Points
    • Soft: Generally solid/liquid/gas
  • Exceptions
    • Mercury: Liquid metal at room temp
    • Graphite: Non-metal conductor
    • Sodium/Potassium: Soft metals cut with knife

• Chemical Properties

  • Metals
    • Reaction with Oxygen
      • Form Metal Oxides
      • Oxides are Basic in nature
      • Metal + O₂ → Metal Oxide
    • Reaction with Water
      • Highly Reactive: React with cold water (e.g., Na, K)
      • Moderately Reactive: React with hot water (e.g., Mg)
      • Low Reactive: React with steam (e.g., Fe)
      • Unreactive: No reaction (e.g., Cu, Ag)
    • Reaction with Dilute Acids
      • Displace Hydrogen
      • Metal + Acid → Salt + H₂
      • Nitric Acid Exception: No H₂ released (except Mg/Mn)
    • Displacement Reaction
      • More reactive metal displaces less reactive metal from salt solution
  • Non-metals
    • Reaction with Oxygen
      • Form Non-metal Oxides
      • Oxides are Acidic in nature
      • Non-metal + O₂ → Non-metal Oxide
    • Reaction with Acids
      • Do not react with dilute acids

• Reactivity Series

  • Arrangement of metals in decreasing order of reactivity
  • Order: K > Na > Ca > Mg > Al > Zn > Fe > Pb > H > Cu > Ag > Au
  • Implications
    • Predicts displacement reactions
    • Determines extraction method

• Occurrence & Extraction of Metals

  • Minerals: Naturally occurring compounds of metals
  • Ore: Mineral from which metal can be extracted profitably
  • Concentration: Removal of impurities (Ore dressing)
  • Extraction Methods
    • Low Reactivity Metals (Cu, Hg, Ag, Au)
      • Found as Native metals or simple heating of sulfides
      • Roasting: Heating sulfide ore in excess air
    • Middle Reactivity Metals (Zn, Fe, Pb)
      • Found as Carbonates or Sulfides
      • Roasting: Sulfide → Oxide
      • Calcination: Carbonate → Oxide
      • Reduction: Oxide + Carbon/Coke → Metal
    • High Reactivity Metals (K, Na, Ca, Mg, Al)
      • Found as Chlorides
      • Electrolytic Reduction: Molten chlorides decomposed by electricity
  • Refining
    • Purification of metals
    • Electrolytic Refining (e.g., Copper)
      • Anode: Impure metal
      • Cathode: Pure metal strip
      • Electrolyte: Metal salt solution
      • Anode Mud: Insoluble impurities settle

• Corrosion

  • Deterioration of metals by reaction with environment
  • Rusting of Iron
    • Requires Oxygen and Moisture
    • Forms Hydrated Iron Oxide (Reddish-brown layer)
  • Prevention Methods
    • Painting/Oiling/Greasing
    • Galvanization: Coating with Zinc
    • Alloying: Mixing with other metals
    • Anodizing: Oxide layer formation

• Alloys

  • Homogeneous mixture of metals or metal + non-metal
  • Properties: Enhanced strength, resistance, appearance
  • Examples
    • Steel: Iron + Carbon
    • Brass: Copper + Zinc
    • Bronze: Copper + Tin
    • Solder: Lead + Tin (Low MP, electrical joints)
    • Duralumin: Al + Cu + Mg + Mn (Aircraft parts)
    • Amalgam: Mercury alloy