Question

to show the break down of food by using the model of chalk piece kept in vinegar.
Aim:-​

Answer 1

Answer:

A complete chalk piece is placed inside the vessel B containing vinegar. Observation: After sometime, it can be noted that Chalk piece powder dissolves faster than a full chalk piece. This shows that in the process of digestion of food, crushing is necessary mechanically to make the breakdown of materials fast.

Answer 2

Answer:

When a Chalk piece is kept in a glass vessel containing Vinegar, it can be observed that the chalk piece dissolves in the solution. Reaction that occurs behind this process is as follows: Acetic acid + Calcium carbonate --> Water + Carbon dioxide + Calcium Acetate.