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anything that has mass and occupies space
the property that defines the quantity of matter in an object
the capacity to transfer heat or to do work
study of the composition, structure, and properties of matter
a transformation of a sample of matter, such as a change in its physical state, that does not alter the chemical identity of any substance in the sample.
a combination of pure substances in variable proportions.A mixture can be separated by physical process.
a mixture in which the components are distributed uniformly throughout and have no visible boundaries or regions
another name for homogeneous mixtures. Solutions are often liquids, but they may also be solids or gases.
a mixture in which the components are not distributed uniformly, so that the mixture contains distinct regions of different compositions.
pure substance that cannot be separated into simpler substances by any chemical process. composed of a single type of atom.
a pure substance that is composed of two or more elements linked together in fixed proportions and that can be broken down to those elements by some chemical process.
Law of Constant Composition
All samples of a particular compound contain the same elements combined in the same proportions.
the smallest particle of an element that retains the chemical characteristics of the element
a collection of atoms chemically bonded together in characteristic proportions
Br2,I2,N2,Cl2,H2,O2, and F2
those that are independent of the amount of substance present
Ex: color, hardness, melting temperature
those that varies with the quantity of the substance present.
Ex: length, width, mass, volume
properties of a pure substance that can be observed or measured without changing the substance into another substance
those that can be observed only by reacting it to form another substance.
form of matter that has a definite shape and volume
a form of matter that occupies a definite volume but flows to assume the shape of its containers.
a form of matter that has neither definite volume nor shape, and that expands to fill its containers; also known as vapor.
solid to gas
Solid to liquid
liquid to gas
gas to liquid
liquid to solid
gas to solid
depends only on the amount of substance
depends on the amount of substance and force due to gravity on it.
Significant Figure Multiplication and Division
the answer contains same number of significant figures as the measurement with the fewest sig. figs.
Significant Figures Addition and Subtraction
Answer contains same number of decimal places as the quantity with the fewest decimal places.
indicates how repeatable a measurement is
reflects how close the measured value is to the true value
produce values either too high or too low.
produce values either higher and some lower than the true value.
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