Question
Give the main differences between physical changes and chemical changes.
✓
Answer
| PHYSICAL CHANGE | CHEMICAL CHANGE | ||
| i | No, new substance is formed in a physical change. | i | New substance is formed in a chemical change. |
| ii | It is a temporart change. | ii | A chemical change is a permanent change. |
| iii | It is easily reversible. | iii | This process is usually irreversible. |
| iv | Very little heat or light energy is usually absorbed or given out in this process. | iv | A lot of heat or light energy is absorbed or given out in this process. |
| v | Mass of substance does not alter. | v | Mass of substance does alter in this process. |
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