List 10 food substances that contain acids and 10 that contain bases.

Here are 10 food substances that contain acids and 10 that contain bases:

A) Food substances containing Acids:

1. Lemon (citric acid)
2. Orange (citric acid)
3. Vinegar (acetic acid)
4. Tomato (citric acid, malic acid)
5. Yogurt (lactic acid)
6. Apple (malic acid)
7. Grapes (tartaric acid)
8. Pickles (acetic acid)
9. Coffee (chlorogenic acid)
10. Strawberries (citric acid, ascorbic acid)

B) Food substances containing Bases (or are alkaline-forming):

1. Spinach
2. Kale
3. Broccoli
4. Cucumber
5. Avocado
6. Almonds
7. Sweet potatoes
8. Bananas
9. Watermelon
10. Bell peppers