(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)
Small particles in a gas or liquid constantly (m)ove around randomly. Work on this "Brownian motion" led to the acceptance of atoms as physical reality
![[39] If I were your husband, would you help me unwind a(f)ter my workout?](https://cdn3.nude-pics.org/39-if-i-were-your-husband-would-you-help-me-5a8LNPJIVn/39-if-i-were-your-husband-would-you-help-me-thumb.webp)
