Define physical and chemical properties, provide three examples of each, discuss their reversibility, and explain the fundamental differences between them.

Bose-einstein condensation occurs at what temperature?

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.