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8.5B
Protons Identify Elements and Valence Electrons Determine Reactivity
Question | Answer |
---|---|
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 |