12 terms

Chapter 20: Chemical Bonds Vocab

Glencoe Physical Science Book
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chemical formula
tells what elements a compound contains and the exact number of the atoms of each element in a unit of that compound
chemical bond
the force that holds atoms together in a compound
ion
a charged particle that either has more or fewer electrons than protons
ionic bond
the force of attraction between the opposite charges of the ions in an ionic compound
covalent bond
the attraction that forms between atoms when they share electrons
molecule
a neutral particle that forms as a result of electron sharing
polar molecule
one that has a slightly positive end and a slightly negative end although the overall molecule is neutral
nonpolar molecule
one in which electrons are shared equally in bonds
binary compound
one that is composed of two elements
oxidation number
the relationship between and element's position on the periodic table and the number of electrons it gains or loses
polyatomic ion
a positively or negatively charged, covalently bonded group of atoms
hydrate
a compound that has water chemically attached to its ions and written into its chemical formula