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E&C Vocabulary

Elements and Compounds Vocabulary

TermDefinition
Atom The smallest particle of an element
Atomic Mass the mass of an atom of a chemical element expressed in atomic mass units.
Atomic Number The number of protons in the nucleus of an atom
Compound A substance made of two or more elements chemically combined in a specific ratio, or proportion
Covalent Bond A chemical bond formed when two atoms share electrons
Electrons Tiny, negatively charged-energy particles that move around outside the nucleus of an atom
Element A substance that cannot be broken down into any other substances by chemical or physical means
Ion An atom or group of atoms that has become electrically charged
Ionic Bond The attraction between oppositely charged ions
Mixture Two or more substances that are mixed together but not chemically combined
Molecule The combination of two or more atoms
Neutrons Small uncharged particles that are found in the nucleus of an atom
Product A substance formed as a result of a chemical reaction
Protons Small positively charged particles that are found in the nucleus of an atom
Reactant A substance that enters into a chemical reaction
Subatomic smaller than or occurring within an atom.
Valence electrons The electrons that are farthest away from the nucleus of an atom and are involved in chemical reactions
Solution A well-mixed mixture
Solute The part of a solution present in a lesser amount and that is dissolved by the solvent
Created by: Wise_Girl
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