Lesson 2 of 14
Acids in our food
Show on a big screenLemon, curd, tamarind, vinegar. All taste sour. Dip a blue strip in each.
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The idea
A substance in the acidic group is an acid. Because acids taste sour, foods that taste sour tend to contain one.
| Food | Its common acid |
|---|---|
| Lemon juice | citric acid |
| Curd | lactic acid |
| Tamarind | tartaric acid |
| Vinegar | acetic acid |
Step 1 of 4
- A thali with sambar, curd rice, pickle and rice.
- Sambar has tamarind. Curd rice has curd.
- This pickle is made with lemon. All three carry an acid.
- Acids on this thali: 3.
Foods that taste sour tend to contain an acid. Acids turn blue litmus red.
Try the lab to finish this lesson.