Which of these is an example of a reversible physical change?
a) boiling water
b) breaking glass
c)cracking an egg
d) splitting a diamond

Word equation for k+ h2o yield koh + h2

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds