Water and oxygen gas are the products of a chemical reaction.
which are the most likely reactants for these products?
a. only water molecules
b. only oxygen gas molecules
c. only hydrogen peroxide molecules
d. only water and oxygen gas molecules

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

I’m an electrically neutral atomic any element, there are equal numbers of

Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green