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Chapter 4 & 5 vocab

Chapter 4 vocab

TermDefinition
Atomic Mass The mass of an atom when you add the protons and neutron masses together. It's the weight of the nucleus.
Atomic Number The number of protons an element has
Proton A positively charged particle that is found in the nucleus of an atom
Neutron A neutral particle that is found in the nucleus of an atom
Electron A negatively charged particle that is found outside the nucleus of an atom
Isotope A variation of an element that has a different number of neutrons but same number of protons.
Nucleus The majority of the mass of an atom is located in the nucleus, location of the protons and neutrons, positively charged.
Photon A packet of light energy
Valence Electron The electron in the outermost shell of an atom
Excited State When an atom gains energy because an electron jumped up a shell
Ground State The lowest allowable energy state
Emission Spectra Shows light frequencies of radiation emitted by atoms.
Created by: mdaggett8
 

 



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