5.How you will decide whether a change is a chemical reaction or not?
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A chemical change occurs when the substance's composition is changed. When bonds are broken and new ones are formed a chemical change occurs. The following are indicators of chemical changes: Change in Temperature.21-Aug-2020
Solid → Liquid: Melting
Solid → Gas: Sublimation
Gas → Liquid: Condensation
Liquid → Gas: Vaporization
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A chemical change occurs when the substance's composition is changed. When bonds are broken and new ones are formed a chemical change occurs. The following are indicators of chemical changes: Change in Temperature.
★Solid → Liquid (Melting)
★Liquid → Gas (Vaporization)
★Liquid → Solid(Freezing)
★Gas → Liquid(Condensation)
★Solid → Gas(Sublimation)
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