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Chem 1210 chapter 1

QuestionAnswer
Matter anything that has mass and occupies space
property any characteristic that allows us to recognize a particular type of matter and to distinguish it from other types
gas no fixed volume or shape
liquid distinct volume, no shape
solid definite shape and volume
pure substance matterthat has distinct properties and a composition that does not vary from sample to sample
elements substances that cannot be decomposed into simpler substances
compounds substances composed of two or more elements
mixtures combinations pf two or more substances in which each substance retains its chemical identity
law of definite proportions (constant composition) a pure compound has the same composition and properties regardless of its source
heterogeneous mixtures do not have the same composition, properties, and appearance throughout
homogeneous mixtures uniform throughout
solution homogenous mixture
intensive properties do not depend on the amount of sample
extensive properties depend on the amount of sample
precision a measure of how closely individual measurements agree with one another
accuracy how closely individual measurements agree with the true value
Created by: haleymeek