Matter - Anything that has mass and takes up space.

Substance - A single kind of matter that is pure and has a specific set of properties

Physical Property - A characteristic of a pure substance that can be observed without changing it into another substance

Chemical Property - A characteristic of a pure substance that describes its ability to change into diffrent substances

Element - A pure substance that can't be broken down into other substances by physical or chemical means

Atom - the basic partical from which all elements are made

Chemical Bond - the force that holds two or more atoms together

Molecule - a neutral particle made of two or more atoms joined by covalent

Compound - a pure substance made of two or more elements chemically combined

Chemical Formula - shows the elements in the compound and the ratio of atoms

Mixture - Two or more substances mixed together in the the same place, but are not chemically combined

Hererogeneous Mixture - A mixture where the diffrent substances are unevenly distributed throughout the mixture

(You CAN see the diffrent parts)

Homogeneous Mixture - a mixture where the substances are evenly distributed throughout the mixture

(You CAN"T see the diffrence)

Solution - A well mixed mixture containing a solvent and at least one solute that has the same properties throughout

Physical Change - any change that alters the form or appearance of matter

Chemical Change - any change in matter that produces one or more new substances

Conversion of matter - Matter is not lost or gained in any chemical or physical change

Energy - the ability to do work or cause change

Temperature - Measure of the average random motion of particals of matter