Science - Chemistry Grade 9 2025

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8 Terms

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covalent bond

a type of chemical bond that occurs between non-metal atoms

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ion

an atom or molecule that has gained or lost one or more electrons and is electrically charged

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ionic bond

a type of chemical bond that occurs between oppositely-charged ions

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polyatomic ion

a group of covalently-bonded atoms that is electrically charged

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product

a substance that is produced during a chemical reaction

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reactant

a substance that undergoes change during a chemical reaction

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valence electron

an electron that occupies the outermost energy level of an atom

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The Law of Conservation of Mass

Mass is neither created nor destroyed, only transferred or transformed