ICSE Class 9: Types of Chemical Changes and Energy Changes Videos | Displacement reaction

• give three applications of neutralization reactions
• what is thermal reaction?
• IUPAC
• When solute 'A' dissolves in a solvent the solution becomes hot and when solute'B'dissolves in the same solvent the solution becomes cold classify the two changes as exothermic and endothermic give reasons
• what do we observe when lead nitrate is heated
• give balanced molecular eqution for : 1) .one reactant gives 2 product 2). one reactant gives 3 products 3). two reactant gives 2 product 4.) two reactant gives 4 products
• what is chemical reactions
• I had a doubt that sir solved today on live class my doubt was ,-> can rusting of metal  be prevented ? than he said yes by paint. so what chemicals or what are the quality of the paint which prevents rusting means how does it happen???? this is my question ,please help me out. thank you.
• what is a chemical change
• prove that air is essential for combustion

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