Materials Needed:
* Litmus Paper
* Bicarbonate of Soda
* Tomato juice/sauce
* Soup
* Vinegar
* Fruit juice
* Fish Sauce
* wine
Procedure:
1) Test various household items with an indicator (litmus paper) to determine whether they are acid
or base.
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| Chicken soup |
 | |
| Vinegar |
 | ||
| Guyabano juice |
 | |
| wine |
 | |
| Water |
 | ||
| Tomato sauce before the bicarbonate of soda |
2) Now mix tomato juice and bicarbonate of soda and test with an indicator.
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| Tomato sauce mixed with bicarbonate of soda |
Results:
* Blue litmus paper turns pink or red when dipped in Acid (i.e. vinegar, wine, tomato sauce, fruit
juice, fish sauce)
* Red litmus paper turns blue when dipped in a Base (i.e water and soup)
* Bicarbonate of soda acts a buffer which weakens the acidity of the tomato juice/sauce.
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