The amount of energy in kilojoules associated with the breaking or making of one mole of chemical bonds in a molecular element or compound is known as a) bond energy
b) activation energy
c) enthalpy

If soap hits the floor, is the soap dirty or the floor

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town