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Protons Identify Elements and Valence Electrons Determine Reactivity

Proton a positively charged subatomic particle of the nucleus of an atom that contributes to the mass of the atoms
Atomic Number the number of protons in the nucleus of a single atom
Electron a negatively charged subatomic particle that orbits the nucleus
Valence Electrons the electrons in the outermost energy level of an atom that determine the chemical properties of an element and influence how an element will react with other substances
Reactivity rate at which a chemical substance tends to undergo a chemical reaction; significantly influenced by valence electrons
Electron Cloud the area surrounding the nucleus of an atom where the electrons are found
Net Charge the sum of negative and positive charges P+E= Charge
What does APE stand for? Atomic Number = Protons = Electrons
What does MAN stand for? Mass - Atomic Number = Neutrons
P + N = Mass
P + E = Charge
Chemical Properties are determined by ___________________. Valence Electrons
Reactivity of an element is determined by ____________________. Valence Electrons
Created by: Mrs_Bullock


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