2. CHEMICAL CHANGES
• A chemical change is a permanent and irreversible change which produces a new
substance.
• Chemical changes are otherwise called as chemical reactions
• One or more substances undergo a reaction to form one or more new substances
3. FACTORS DETERMINING CHEMICAL CHANGES
• Contact in physical states
• Solution of reactants
• Electricity
• Heat
• Light
• Catalyst
4. CONTACT IN PHYSICAL STATE
This Photo by Unknown Author is licensed under CC BY-SA
This Photo by Unknown Author is licensed under CC BY-SA