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

the components of a vector are the parts of the vectors that are to each other.

b perpendicular

chemical energy --> gravitational potential energy --> kinetic energy --> elastic potential energy --> gravitational potential energy

explanation:

when emma starts the hike, the chemical energy stored in her body is used to climb up the mountain, and so she gains gravitational potential energy (because at the end, she will be at a higher height h above the ground). then she goes bungee jumping: as she falls, this gravitational potential energy is converted into kinetic energy (because her speed increases as she falls down), until the point when the rope stretches, and she stops moving. at that moment, all the kinetic energy is converted into elastic potential energy due to the stretching of the rope. then, this energy is released because the rope returns to its natural length, and emma gains a small increase in altitude , so she gains some gravitational potential energy.