Question

Classify the following, as a physical or a chemical change. Give reasons: Churning of milk cream to get butter?

Answer 1

Physical Change:

• The change in which a substance undergoes a change in its physical properties in which no new substance get formed is known as a physical change.
• A physical change is generally known to be reversible in nature.

Chemical Change:

• A change in which one or more new substances get formed is known as a chemical change.
• A chemical change is generally irreversible in nature.

Churning of milk cream to get butter:

• Churning of milk cream to get butter involves a physical change.
• Here there is no involvement of chemical reaction or no new product gets formed.
• The principal involved in the given process is centrifugation which turns the milk cream into butter.

Hence, Churning of milk cream to get butter is a physical change.