Pure soaps are crystalline solids that do not form liquid crystals, though a 50/50 mixture of some soaps and water will show liquid crystal properties. Why?

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

In general metals get as you move from left to right across the periodic table.

Robert leaves a chocolate bar in his car while attending school all day. when he goes to his car in the afternoon, the bat has changed into gooey liquid. what happened to the chocolate bar