Achange that occurs when a substance changes composition by forming one or more new substances

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit