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Bio Vocab Chpt. 2

Bio defenitions

TermDefinition
Atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons
Element refers to a simple substance that cannot be broken down into smaller parts or changed into another substance
Proton a subatomic particle with a positive electrical charge
Neutron subatomic particles found inside the nucleus of every atom
Electron a negatively charged subatomic particle that can be either bound to an atom or free
Isotope A form of a chemical element in which the atoms have the same number of protons (part of the nucleus of an atom) but with a different number of neutrons (part of the nucleus of an atom)
Ion an atom or molecule with a net electrical charge
compound A substance made of two or more elements that are chemically joined together
molecule a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
Ionic bond occur between metals, losing electrons, and nonmetals, gaining electrons
covalent bond a chemical bond that involves the sharing of electrons to form electron pairs between atoms
Created by: Logan29
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