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9th Physical Science

Chapter 18

TermDefinition
Chemical bond Force that holds atoms together in a compound.
Chemical formula Chemical shorthand that uses symbols to tell what elements are in a compound and their ratios.
Covalent bond Attraction formed between atoms when they share electrons.
Ion Charged particle that has either more or fewer electrons than protons.
Ionic bond The force of attraction between the opposite charges of the ions in an ionic compound.
Molecule A neutral particle that forms as a result of electron sharing among atoms.
Nonpolar molecule Molecule that shares electrons equally and does not have oppositely charged ends.
Polar bond A covalent bond in which the electrons are not shared equally, resulting in a slightly positive end and a slightly negative end.
Polar Molecule A neutral molecule in which unequal electron sharing results in a slightly positive end and a slightly negative end.
Binary compound Compound that is composed of two elements.
Hydrate Compound that has water chemically attached to its atoms and written into its chemical formula.
Oxidation number Positive or negative number that indicates how many electrons an atoms has gained, lost, or shared to become stable.
Polyatomic ion Positively or negatively charged, covalently bonded group of atoms.
Created by: LeMay1