🧲 Metals and Non-metals::Class 10th Chemistry CBSE

🔍 Properties

• Metals: Malleable, ductile, shiny, good conductors
• Non-metals: Brittle, dull, poor conductors

🔝 Reactivity Series

Potassium > Sodium > Calcium > … > Gold

🔁 Displacement Reactions

More reactive metals displace less reactive ones

💬 Ionic Compounds

• Formed by transfer of electrons (e.g., NaCl)
• High melting/boiling points, soluble in water

🛡️ Corrosion and Prevention

• Rusting of Iron: Fe + O₂ + H₂O → Fe₂O₃·xH₂O
• Prevent by painting, galvanization, alloying