A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Definition: The scientific study of matter, its properties, and interactions with other matter and with energy.
By Anne Marie Helmenstine, Ph.D., About.com
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Definition: The scientific study of matter, its properties, and interactions with other matter and with energy.
©2009 About.com, a part of The New York Times Company.
All rights reserved.