Please enable JavaScript.

Coggle requires JavaScript to display documents.

chem igcse directors cut - Coggle Diagram

- - - - react with water to form alkaline solution (metal hydroxide) and hydrogen gas
        e.g. 2Na + 2H₂O → 2NaOH + H₂↑
        
        Stored in oil to prevent reaction with air or moisture
        
        Na floats and fizzes in water=becomes sodium hydroxide
        
        turns indicator blue/purple
- - - - react with metals to form salts
        
        more reactive halogen displaces less in compound
- - - - low boiling points
        
        Ar(colorless, odorless)
- - - - often form colored compounds
        
        multiple oxidisation states
        
        catalysts
        
        Fe(reacts slowly with water and oxygen
        
        Forms compounds like Fe²⁺ (green) and Fe³⁺ (yellow/brown)