Subatomic
the ability of a substance to change or combine chemically
form of an element having the same number of protons as an element but a different number of neutrons
having to do with an idea or thought
a very tiny piece
smaller than an atom
the basic unit of matter consisting of protons, neutrons, and electrons
the study of particles and interactions at the subatomic level
a particle with a negative charge and very little mass
a particle with a positive charge and a mass roughly equal to the proton
a neutral particle with a mass slightly greater than the proton
the force that holds protons and neutrons together in an atomic nucleus
the process where a nucleus breaks apart, releasing energy and smaller particles
the amount of energy required to remove an electron from an atom
the arrangement of electrons in an atom's outermost energy level, determining its chemical properties