Chemistry+2-4+Review

**Vocabulary Review: ****[] **

=Physical and Chemical Changes (2-4) =
 * In a physical change, substances change form but not their identities. In a chemical change, substances change into other substances.


 * Matter changes whenever energy is added to or taken away from it.


 * Changes of state occur when a substance gains or loses energy and the particles of the substance are rearranged.


 * Chemical changes are also called chemical reactions. Chemical reactions either absorb or release energy.

A precipitation is the formation of a solid in a solution during a chemical reaction. [|Notes Chapter 2 Section 4.doc]
 * [[image:http://www.wikispaces.com/i/mime/32/application/msword.png height="32" caption="external image msword.png" link="http://ahern232science.wikispaces.com/file/view/Notes+Chapter+2+Section+4.doc"]] ||
 * external image msword.png ||

Power Point Review of Physical and Chemical Change [|Chemistry Chapter 2 changes.pptx]

The following music video reviews physical and chemical change: media type="youtube" key="5yjEDihEuZI" height="390" width="480"

The following video reviews physical and chemical change (and introduces some high school chemistry) media type="youtube" key="ZobSZq6WUcM" height="390" width="480"

Another review video on physical and chemical change: media type="youtube" key="qqqmFFCwd7k" height="390" width="640"

Explanation of how heat causes changes in states of matter: media type="youtube" key="aS8vNHeoA9k" height="390" width="480"

Another video explaining how heat is involved in changes in state:

media type="youtube" key="HAPc6JH85pM" height="390" width="640" The following explains changes in states of matter: media type="youtube" key="yyxc-81JDbo" height="390" width="480" Bill Nye explains chemical reaction:

media type="youtube" key="66kuhJkQCVM" height="390" width="480"

[] Take a quiz on physical and chemical changes using one of the following websites: []

[]

[]

[]

[]