Gain enough kinetic energy to get past each other. Ad you heat up a substance, the temperature increases as does the kinetic energy of the particles. At a point the temperature of the substance will stop increasing. The energy is now being used to increase the potential and move the particles further apart.
B. The surface of a silver cup turns black when it is exposed to air.
Yes, transfer of energy is known as an energy transfer
The toxic waste mad everyone sick and effected to the whole neighborhood