Which substance/s have covalent bond? Explain your answer.

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

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