Which statement is true about the matter from a log when it burns?

Which statement is true about the matter from a log when it burns?

• A. All matter is converted into heat energy
• B. Some matter is converted into ashes
• C. No matter is transformed at all
• D. Only gases are released

Answer: (B)

When a log burns, it undergoes a chemical reaction known as combustion, where it reacts with oxygen in the air. During this process, the organic material in the log is broken down, resulting in the production of various substances, including carbon dioxide, water vapor, and solid residues such as ashes. The matter that remains after burning, such as the ashes, represents a transformation of the original matter in the log. This statement highlights the fact that not all of the material from the log is consumed in the process of burning; some of it becomes physical remnants, such as ash and other byproducts, reflecting the conservation of mass principle. Additionally, while energy is released during combustion, the matter itself is not entirely converted into energy; rather, it is transformed into different forms. Therefore, acknowledging that some matter is indeed turned into ashes is a clear and accurate understanding of what occurs during the burning of a log.

When a log burns, it undergoes a chemical reaction known as combustion, where it reacts with oxygen in the air. During this process, the organic material in the log is broken down, resulting in the production of various substances, including carbon dioxide, water vapor, and solid residues such as ashes. The matter that remains after burning, such as the ashes, represents a transformation of the original matter in the log.

This statement highlights the fact that not all of the material from the log is consumed in the process of burning; some of it becomes physical remnants, such as ash and other byproducts, reflecting the conservation of mass principle. Additionally, while energy is released during combustion, the matter itself is not entirely converted into energy; rather, it is transformed into different forms. Therefore, acknowledging that some matter is indeed turned into ashes is a clear and accurate understanding of what occurs during the burning of a log.