Which of these take place during a chemical change

Whenever a chemical reaction happens, two chemicals push each other around and something happens. Each reaction happens differently with each different chemical. Two things can make stuff explode or fizz, it could also smoke like in a volcano experiment.

A) the enthralling of formation for pure element in its standard state is always positivehope this : )

Sun is explosive itself spread 9 planets.earth is 3rd explosive in the solar system about 500 hundred million years ago . first earth became ice age and freezing climate.centre of earth magma. north zone is artic . south is anatric