Question

Burning of coal is a______change.

Answer 1

Burning of coal is chemical change.

• Chemical change: A change that alters the specific properties of a substance by bringing about a change in its molecular composition, followed by a change in its state, is called a chemical change.
• New substances with entirely new properties are formed.
• A chemical change cannot be easily reversed.
• There is usually a change in weight during a chemical reaction.
• A lot of heat is usually given off or absorbed during a chemical change.
• So, the burning of coal is a chemical change because when coal is burnt it is converted to carbon dioxide. So, it cannot back to its original form