A lot of common words, like Jacuzzi, dumpster, and Styrofoam, are or were trademarked names but have largely been "genericized". (M)aybe this picture will get you hot like kerosene
(M)ost metals form an oxide layer when exposed to oxygen. Some are bad, but some "passivate" the surface, protecting it from corrosion (e.g., aluminum)
I really wish that climate change, vaccines, mask wearing, etc. hadn't become politicized. Our near- and long-term future would be a lot more hopeful (M)