The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs? OA. The total mass of the system increases. OB. The total mass of the system stays the same. OC. The mass of the oxygen atoms increases. OD. The mass of the hydrogen atoms decreases.​

Vi limitens. vastery test select the correct answer. which statement explains why large atoms are more reactive than small atoms? a. large atoms have valence electrons farther from the nucleus and lose them more readily. b. large atoms have greater ionization energy, which they can utilize during a reaction. c. large atoms have a greater number of electrons that they can lose during a reaction. d. large atoms have more energy levels, so they have more energy to pass on in a reaction. reset next