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Anything that has mass and takes up space (volume)


The amount of matter the object contains

Physical Property

Quality of condition of a substance that can be observed or measured without changing the substance's composition


Matter that has a definite shape and volume. Almost incompressible.


A form of matter that flows, has a fixe3d volume, and takes the shape of its container. Almost incompressible but they expand when heated.


A form of matter that takes both the shape and volume of its container


The gaseous state of a substance that is generally a liquid or solid at room temperature

Physical Change

A change that alters a given material without changing its composition. BOil, freeze, dissolve, melt, condense, break, split, crack, grind, cut, crush, and bend.


A physical blend of two or more substance, varying compositions.

Heterogeneous mixture

A mixture that is not uniform in composition.

Homogeneous Mixture

A mixture that has a completely uniform composition.


Gases, solids, or liquids that are homogeneous mixtures.


Any part of a system with uniform composition and properties.


A liquid is boiled to produce a vapor that is then condensed again to a liquid.


The simplest forms of matter that can exist under normal laboratory conditions. They cannot be separated into simpler substances by chemical means.


Substances that can be separated into simpler substances only by chemical means.

Chemical Symbol

One or two letters that represent an element.

Chemical Reaction

A change where one or more substances change into new substances.


The starting substances.


The substances formed.

Chemical Property

The ability of a substance to undergo a chemical reaction and to form new substances. Burn, rot, rust, decompose, ferment, explode, and corrode.

Law of Conservation of Mass

In any physical change or chemical reactoin, mass is neither created nor destroyed; it is conserved.

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