Belinda observes that the reaction 2H2O + 02 2H2O2 appears to have stopped, because the concentrations of reactants and products are not changing. Which statement is true at this point in the reaction? O A. Molecules of H20 and O2 have stopped forming. B. Molecules of H2O2 have stopped forming. O C. Molecules of H2O2 are forming only when the reaction vessel is disturbed O D. Molecules of H2O2, H20, and O2 are still forming.

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.