Answer:
1) lemon , stomach , grapes , tomatos , ammonia , milk
Step-by-step explanation:
lemon has citric acid
grapes = malic acid
stomach = hydrochloric acid
tomatos = citric acid
ammonia ( it can be base or acid sometimes )
milk = lactic acid
2) soap , oven cleaner , bleach , ammonia , banana , baking soda , eggs
3) stomach acid , citric acid , lactic acid , malic acid ( ph scale )
the lower the ph the higher the acidity
so check the ph
note
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