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a concise verbal or mathematical statement of a behavior or a relation that seems always to be the same under the same conditions
kinetic-molecular theory of matter
helps interpret properties; all matter consists of extremely tiny particles (atoms, molecules, or ions) that are in constant motion increase in temp. = increase in motion
experiments and observations (i.e., what color, dissolves in water, conducts electricity, react with oxygen?)
a mixture in which the properties in one region or sample are different from those in another region or sample
a mixture in which the properties are the same throughout a region or sample; often called "solutions"
smallest particle of an element that retains the characteristic chemical properties of that element
an interaction between two or more atoms that holds them together by reducing the potential energy of their electrons
a pure substance composed 2 or more different elements held together by chemical bonds
the smallest discrete units that retain the composition and chemical characteristics of the compound
properties that can be observed and measured without changing the composition of a substance
a physical property that determines the direction of heat flow in an object on contact with another object; affects the numerical values of an objects properties such as density
changes in physical properties where the identity of the substance is preserved but the physical state, gross size, or shape may have changed
indicates whether and sometimes how readily a material undergoes a chemical change with another material
the compression and expansion of the spaces between molecules in the transmission of sound
i.e. energy possessed by a ball held above a floor and by water at the top of a water wheel
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