Question

Help your mother in kitchen while cooking and while making the duff and learn about different facts related to physical and chemical changes make a report on different types and properties of chemical and physical changes

Answer 1

Answer:

1. We observe fermentation when the dough rises

Answer 2

Answer:

Dough rising: puffing, fermentating

In a physical change no new substance is formed. Tearing a piece of paper changes its shape and size. Similarly kneading of flour to dough changes its state. Melting of ice is also a physical change where the matter is changing its state from solid to liquid.

The Duff reaction or hexamine aromatic formylation is a formylation reaction used in organic chemistry for the synthesis of benzaldehydes with hexamine as the formyl carbon source. It is named after James Cooper Duff, who was a chemist at the College of Technology, Birmingham, around 1920–1950.