When hydrogen peroxide bubbles, it is undergoing a chemical change. which statement best describes what is happening?
the atoms in hydrogen peroxide are breaking apart and forming new types of molecules.
the atoms in hydrogen peroxide are breaking apart and recombining into the original molecules.
the molecules of hydrogen peroxide remain intact as new types of molecules form and move out of the liquid.
the molecules of hydrogen peroxide remain intact but move more quickly to allow evaporation.

the answer is A. i just learned this.

hope it helps.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.