Which indicator most likely suggests that a chemical change is taking place?
change in size
change of color
change of state
change in shape

In any energy conversion, some of the energy is lost to the environment as question 5 options: electrical energy potential energy sound energy thermal energy

It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.

What must happen before a body cell can begin mitotic cell division