How Do They Do It?
Battery Power/ Chocolate/ Toothbrushes. In this episode, find out how sulphuric acid and lead are combined into 100 million car batteries, how they turn...
Battery Power/ Chocolate/ Toothbrushes. In this episode, find out how sulphuric acid and lead are combined into 100 million car batteries, how they turn beans into bars of chocolate and how toothbrushes clean our teeth.