Using principle of conservation of momentum , explain the working principle of the rocket

Which of these describe conduction transfer of heat between two objects that are touching transfer of heat by the actual movement of war matter the process in which energy is imitated by one of the object transmitted through space and absorbed by another a process in which energy is released by the molecules breaking apart

What happens when the number of protons in an atom changes

What are two examples of phase changes that skip a phase during transition?