Chemistry Nomenclature Vocab Quiz

alkane

Carbon and hydrogens with single bonds

Bond

Attractive forces that hold atoms and ions together

coefficient

number in front of chemical formula to indicate number of molecules

compound

Chemical substance made up of 2 or more elements

covalent bond

sharing of electron pairs between 2 atoms (usually 2 nonmetals)

diatomic molecule

Molecule made up of exactly 2 atoms

double covalent bond

Bond made up of 2 atoms that share 2 pairs of electrons (4 shared total)

duet rule

Hydrogen and helium reaching electron configuration from having 2 valence electrons

formula unit

simplest whole number ratio of atoms in a non-molecular substance (like ionic or metallic bond)

ionic bond

Bond formed from electrostatic attraction between cation and anion (usually metal and nonmetal)

Lewis Dot Diagram

used to show how electrons are arranged around individual atoms in a molecule

monatomic ion

a charged particle made up of a single atom (a single ion)

octet rule

the tendency of atoms to prefer to have 8 electrons in their valence shell

polyatomic ion

2 or more atoms that are covalently bonded together

single covalent bond

a type of chemical bond where 2 atoms share 1 pair of electrons (2 total)

triple covalent bond

bond where 2 atoms share 3 pairs of electrons (6 shared total)