Elements, Compounds, and Mixtures
What is an Element?
-A pure substance that cannot be separated into a simpler substance by physical or chemical means. One example of an element is copper.
More About Compounds!
-A pure substance composed of two or more different elements joined by chemical bonds.
Compounds can only be broken down by chemical means, not physically. It has a special ratio that is the same every time.
A mixture can be separated physically, a mixture is a combination of two or more pure substances that are NOT chemically combined. An example of a mixture is a salad.