Which substance is a combination of different atoms?
o a. homogeneous mixture
b. heterogeneous mixture
c.
element
d.
compound

What happens when chlorine reacts with bromine? a. electrons move from the chlorine atoms to the bromine atoms. b. electrons move from the bromine atoms to the chlorine atoms. c. electrons are shared between the chlorine atoms and the bromine atoms. d. electrons become delocalized among the atoms.

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

In the first law of thermodynamics, triangle e=q-w, what does q stand for