Question
State the differences between acids and bases.
✓
Answer
| Acids | Bases |
| These are sour to taste | These are bitter to taste. |
| Acids are proton donors or electron acceptors | Bases are proton acceptors or electron donors |
| Acids have a $pH$ value of $ < 7.$ | Bases have a $pH$ value $ > 7.$ |
| Acids turn blue litmus red. | Bases do not change the colour of blue litmus. |
| Acids do not change the colour of red litmus | Bases turn red litmus blue |
| With china rose indicator, these give a dark pink colour. | Bases give green colour with china rose indicator. |
| Acids do not change the colour of the turmeric indicator. | Bases turn the colour of the turmeric indicator to red |
| Acid is a substance that contains hydrogen ion $(H^+)$ | Bases are substances that contain hydroxyl ion $(OH^-)$ |
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