Chapter 8 Vocabulary part 1

a bond formed when atoms share valence electrons

• covalent bond

• ionic bond

• metallic bond

• molecule

a bond in which two atoms share two pairs of electrons

• ionic bond

• double covalent bond

• metallic bond

• diatomic molecule

a molecule consisting of two atoms of the same element

• molecular compound

• formula unit

• double covalent bond

• diatomic molecule

energy required to break a covalent bond between two atoms - expressed in kilojoules per mole (kJ/mol)

• electronegativity

• ionization energy

• bond dissociation energy

• triple covalent bond

a neutral group of atoms joined together by covalent bonds

• ionic compound

• molecule

• formula unit

• polyatomic ion

the chemical formula of a molecular compound that shows the amount of atoms of each element present

• structural formula

• formula unit

• molecular formula

• molecular compound

a molecule that has a positive or negative charge

• cation

• anion

• polyatomic ion

• molecular compound

a bond that forms when two atoms share one pair of electrons

• double covalent bond

• single covalent bond

• formula unit

• unshared pair

chemical formula that shows the arrangement of atoms in a molecule or polyatomic ion; shows shared electron pairs as dashes

• molecular compound

• molecular formula

• structural formula

• polyatomic ion

a pair of valence electrons that is NOT shared between atoms

• bonding pair

• shared pair

• unshared pair

• molecule