How would you describe the change of wood when it is burning?

Question

• It is a physical change, where some of the intensive and extensive properties will change.
• It is a physical change, where both the intensive and extensive properties will not change.
• It is a chemical change, where some of the intensive and extensive properties will change.
• It is a chemical change, where both the intensive and extensive properties will not change.

Answer 1

The correct description of the change of wood when it is burning is:

It is a chemical change, where some of the intensive and extensive properties will change.

When wood burns, it undergoes a chemical transformation as it reacts with oxygen to produce new substances (like carbon dioxide and water), which signifies a chemical change. Additionally, the intensive properties (like color, density, and phase) and extensive properties (like mass and volume) of the wood are altered during the burning process.