Course Glossary

number derived by counting or by definition

property of a substance that depends on the amount of the substance

unit of temperature; water freezes at 32 °F and boils at 212 °F on this scale

equals the magnitude of the charge of an electron (e) with e = 1.602 10⁻¹⁹ C

state in which matter has neither definite volume nor shape

vertical column of the periodic table

element in group 17

combination of substances with a composition that varies from point to point

combination of substances with a composition that is uniform throughout

compound containing one or more water molecules bound within its crystals