chemical law
law of nature relevant to chemistry
law of multiple proportions
chemical law that, if two elements form more than one compound, then the ratios of the masses of the second element which combine with a fixed mass of the first element will always be ratios of small whole numbers
law of definite proportions
statement that a given chemical compound always contains its elements in fixed ratio (by mass) and does not depend on its source and method of preparation
ponderal laws
experimental laws obtained by gravimetric chemical analysis of chemical elements
gas law
scientific law describing ideal gases
conservation of mass
scientific law that a closed system's mass remains constant