MASS, VOLUME, DENSITY VOCABULARY mass - the amount of matter in an object volume - the amount of space occupied by an object weight - measure of the gravitational attraction between objects area - the amount of space on the surface of an object density - mass per unit volume of a substance metric system - standard system of measurement used by all scientists meter - basic unit of volume in the metric system liter - basic unit of volume in the metric system gram - basic unit of mass in the metric system newton - basic unit of weight in the 
(space; occupied; by an object weight - measure of the gravitational attraction between objects area) (a substance metric system - standard system of measurement; used; by all scientists meter - basic unit of volume)
space a substance metric system - standard system of measurement
occupied used
by an object weight - measure of the gravitational attraction between objects area
by all scientists meter - basic unit of volume