Indeed it works great for any substance burning that produces gaseous oxides (CO2, water, etc). It broke down when people noted that burning metals produced solid oxides that weighed more, and the excess mass came from the air. Thus, it was revealed that the sign was wrong.
Indeed it works great for any substance burning that produces gaseous oxides (CO2, water, etc). It broke down when people noted that burning metals produced solid oxides that weighed more, and the excess mass came from the air. Thus, it was revealed that the sign was wrong.