C. R. "Chuck" Downing
shared:
8/1/2017 1:05:07 AM
Reply#SciFact Mercury is the only liquid metal & 1 of 2 liquid elements at room temperatures. @SherryFrazier https://t.co/GvHH7Qk8GC
— C.R. Downing (@CRDowningAuthor) August 1, 2017