Milk overflow.pptx .

What actually causes milk to spill over your vessel??

1. ED1304:FOOD CHEMISTRY AND SAFETY TOPIC : MILK OVERFLOW SUBMITTED BY : DEVANANDHA K H ED23B1010 SUBMITTED TO : MR.S.DETCHANAURTHY FACULTY-IN-CHARGE CHEMISTRY DEPARTMENT OF EDUCATION NIT PUDUCHERRY

2. CHEMISTRY BEHIND THE MILK OVERFLOW

3. Have you ever been scolded by your mother because you spilled the milk over the entire stove which you were told to watch out!! I’m sure most of us will! Anyway I’m already in the club ;)

4. But have you ever been wondered on how this milk alone spills over on boiling while water, or most other liquids doesn’t do so..? What is the chemistry behind it ? Let’s find out!!!!

5. The chemistry behind milk boiling and overflowing involves the interactions of its various components under heat: 1. Milk Composition : Milk is a colloid , consisting of water (87%), fats, proteins (casein and whey), lactose (sugar), and minerals. 2. Heat and Phase Changes : Water Evaporation: As milk is heated, water molecules gain energy and start to evaporate. This leads to the formation of steam.

6. Protein Denaturation : Heat causes milk proteins, primarily casein , to denature, meaning they unfold and form a layer on the surface.

7. 3. Formation of the Film : The denatured proteins and fats aggregate at the surface to form a layer, often referred to as the cream layer . This layer acts as a barrier, trapping the steam beneath it.

8. 4. Steam Pressure Build-Up: As more water evaporates, steam accumulates beneath the surface film. The increasing pressure from the trapped steam eventually pushes the film upwards. 5. Overflow : When the pressure exceeds the film’s strength, it breaks , causing the milk to rise and overflow.

9. In very short, “The top layer of milk formed when it is heated traps water vapor, and the ensuing fight between vapor seeking freedom and the top layer not letting them results in a dairy disaster via spilling.”

10. So was that a new piece of information? Ever thought of that chemistry before?? Wasn’t that interesting? Happy if so..:) Also be careful when your mom puts you on duty to watch the milk next time!!! THANKYOU

11. REFERENCE https://www.scienceabc.com/eyeopeners/why-does-milk-spill-upon-boiling-but-water-doesnt.html www.chatgpt.com