Differences between a physical and chemical change
| Physical change | Chemical change |
| No new substances are formed | Entirely new substances are formed |
| It is easily reversible | Not easily reversible |
| No change in mass of substance involved . | Involved changes in mass of substances |
| Accompanied by small heat change | Accompanied by great heat change. |
| Component can be separated by physical reaction | Component cannot be separated by chemical reaction |
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