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atom terms

TermDefinition
model a system or method used as an example to demonstrate an idea
atom the basic smallest unit of a chemical element
nucleus the positively charged centralcore of an atomcontaining neutrons and protons
proton a stable subatomic particle in all atomic nuclei with a positive electric charge
neutron a subatomic particle of about the same mass as a proton but without an electric charge
electron a stable subatomic particle with a charge of negative electricity found in all atoms
atomic number number of protons in the nucleus of an atom, determines the chemical properties of an element
subatomic particle a particle smaller than an atom or cluster of such particles
nuclear symbol the mass number and the atomic number of the isotope
molecule a group of atoms bonded together smallest unit of a chemical compound
Lewis structures diagrams that show bonding between atoms of a molecule and the lone pairs of electrons
Bohr model electrons orbit the nucleus at set distances, changes orbits by quantam leap
electron shell the electrons in the outermost occupied shell determine chemical partners of an atom
valence electron electron associated with an atom that can participate in a formation of a chemical bond
matter that which occupies space and possesses rest mass
Created by: eduardo chavez