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BIOLOGY 2.1 VOCAB

TermDefinition
Atom the basic building block of all matter, and it consists of a central nucleus containing positively charged protons and neutral neutrons, surrounded by negatively charged electrons
Element a pure substance made of only one type of atom that cannot be broken down into simpler substances by chemical means
Proton a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
Neutron a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
Electron each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties
Isotope each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties
Ion an atom or molecule with a net electric charge due to the loss or gain of one or more electrons
Compound an atom or molecule with a net electric charge due to the loss or gain of one or more electrons
Molecule an atom or molecule with a net electric charge due to the loss or gain of one or more electrons
Ionic bond an atom or molecule with a net electric charge due to the loss or gain of one or more electrons
Covalent bond an atom or molecule with a net electric charge due to the loss or gain of one or more electrons
Created by: user-1994488
 

 



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