Which of these most likely indicates that a chemical change has happened? A. Spoiled milk gives off a strong oder. B. Candle wax melts when it is heated. O C. Solid ice forms on a lake in winter. D. A guitar string vibrates when it is plucked.​

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

7. in the cycle, a virus integrates its dna into the host's dna, and its dna is replicated when the host dna is replicated. a. infectious b. retroviral c. lysogenic d.lytic

What lessons does the history and study of the periodic table offer to other fields of science, and the pursuit science more generally