Answer:
When a log is burned, it undergoes a chemical reaction that releases heat and light energy, producing new chemical compounds like ash and smoke. However, the total mass of the log and all the products of the reaction remains the same, as mass is conserved according to the law of conservation of mass.
The law of conservation of mass states that in a closed system, the total mass of the system remains constant, regardless of any physical or chemical changes that may occur within the system. In the case of burning a log, the closed system includes the log, the oxygen in the air, and any products of the reaction (such as ash and smoke). As long as none of these components escape the system, the total mass remains the same.
Therefore, the mass of the pile of ashes left after the log has been burned is equal to the mass of the original log before it was burned, in accordance with the law of conservation of mass.
Step-by-step explanation:
hope this helps :)