wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Eating a chocolate and its digestion involve a physical change and a chemical change. Identify the changes, giving reasons.


Open in App
Solution

Eating a chocolate and its digestion involve a physical change and a chemical change which are as follows:

  • Melting of chocolate: While eating chocolate, the chocolate melts in the mouth. The reason for this is that the chocolate melts from a solid to a liquid state without undergoing any change in its chemical composition. There is no formation of a new chemical substance which makes it a physical change.
  • Digestion of chocolate: Once ingested, the chocolate is digested in the abdomen with the help of gastric juices and enzymes to produce energy and ultimately Carbon dioxide (CO2) and Water (H2O). As there is the formation of new chemical substances with different chemical properties than the starting material i.e., chocolate, it is a chemical change.

Physical change: A physical change involves the formation of no new substance and there is no change in the chemical composition of the substance undergoing the change.

Chemical change: A chemical change involves the formation of one or more new substances and there is a change in the chemical composition of the substance undergoing the change.


flag
Suggest Corrections
thumbs-up
5
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
What about the Other Things We Measure?
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon