You place 3000 grams of firewood into your fireplace and bum it. The mass of the ash is less than the original 3000 grams of wood placed into the fireplace. After watching the video, explain how the mass of the ash is less than than the 3000 grams originally placed into the fireplace. Does the law of conservation of mass apply to this fire? Use 1-2 sentences to explain this

1 answer

The mass of the ash is less than the original 3000 grams of wood because the combustion process converts some of the material into gases (like carbon dioxide and water vapor) that are released into the atmosphere, thus not all the mass remains as solid ash. The law of conservation of mass still applies, as the total mass before and after the reaction is conserved; it is simply transformed into different forms—some as ash and some as gaseous products.