Question

What are the physical changes that happens to after after you add lemon juice

Answer 1

Answer:

When lemon juice is added to milk it curdles, a process of coagulation. The pH of milk is 6.8 and that of lemon is 3.5 due to the presence of citric acid. As the pH of the milk drops upon adding lemon, the milk curdles i.e the casein protein molecules attract one another forming curdles. floating in a solution of translucent whey. The clumping reactions happen more swiftly at higher temperatures than it does at lower temperatures.