Compound
pure substance that contains two or more elements
Chemical Formula
a shorthand expression that uses atomic symbols and subscripts to show the elements and the number of atoms of each element that combine to make a compound
Chemical Bond
force that holds atoms together in a compound
covalent bond
a chemical bond that forms when atoms share electrons
Binary Compound
ionic compound with only two different ions
Molecule
a neutral particle that forms as a result of electron sharing
crystal
a regular, repeating arrangements of atoms, ions, or molecules
ionic bond
an electrical attraction between positively and negatively charged ions in an ionic compound
valence
Electrons on the outermost energy level of an atom
monomer
a small molecule that forms a link in a polymer chain
metal
elements that are usually shiny, good conductors of heat and electricity, and are solids at room temperature
metallic bond
a bond formed when many metal atoms share their pooled valence electrons
Malleability
the ability of a substance to be hammered or beaten into thin sheets
Ductility
the ability of a substance to be drawn, pulled, or extruded through a small opening to produce a wire
unit cell
the smallest repeating pattern that shows how the atoms, ions, or molecules are arranged in a crystal
Polymer
a covalent compound made up of many small, repeating, units linked together in a chain