- Physical Properties - properties that can be observed such as color, density, shape, smell, etc.
- Chemical Properties - properties that require a change in the compound such as reactivity with water, flammability, etc.
- Luster - how shiny an object is
- Malleable - the ability to be molded
- Family/Group - the columns on the periodic table
- Period - the rows on the periodic table
- Atom - basic unit of an element
- Proton - positively charged, in the nucleus,
- Electron - negatively charged, outside the nucleus
- Neutron - neutral, inside the nucleus
- Formula unit - the smallest ratio of ions in an ionic compound
- Molecule - smallest representation of a covalent compound, atoms bonded together
- Atomic Mass - Mass of one atom, typically in amu
- Molecular Mass - Mass of one molecule, typically in amu
- Formula Mass - Mass of one formula unit, typically in amu
- amu - Atomic mass unit
- Molar Mass - Mass of one mole of an element or compound, units = grams/mol
- Mole - a unit of measurement equal to 6.02 *10^23, molar mass, or 22.4 L @STP
- STP - Standard temperature and pressure, needed for the 22.4 L conversion factor to be true
- Ionic Compound - a metal and nonmetal ion bonded together
- Covalent Compound - two or more nonmetals bonded together
- Percent Composition - percent by mass of each element in a compound (part/whole *100)