Which 2 types of bonds are known for having high melting points and high boiling points?

All of the following are part of the biosphere except

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal