Thursday, April 7, 2016

Why are Lemons Sour?

Lemons are sour because they have citric acid, which is found in most fruits and vegetables. Unlike most fruits, lemons have a lot of citric acid. When lemon juice hits your taste buds, they send a message to your brain. This message lets your brain know that what you are tasting is sour. You then react to these messages by making a funny face or shaking your head.