Ground State: The lowest energy state of an atom or other particle. It's like being on the first floor of our skyscraper.
Excited State: A state in which an atom has more energy than it does at its ground state. This is like taking the elevator up to a higher floor in our skyscraper.
Quantum Leap: When an electron moves from one energy level to another, often releasing or absorbing energy. It's like jumping between floors in our skyscraper without using stairs or elevators.