http://www.ck12.org Chapter 3. Introduction to Matter
CHAPTER
3 Introduction to Matter
Chapter Outline
3.1 Properties of Matter
3.2 TYPES OFMATTER
3.3 CHANGES INMATTER
3.4 REFERENCES
The reddish-orange peaks in this picture are individual atoms of cesium on a background of gallium arsenide (GaAs).
This amazing image was made by a scanning tunneling microscope. It’s the only kind of microscope that can make
images of things as small of atoms. The invention of the scanning tunneling microscope was so significant that its
inventors got a Nobel prize for it. Why is being able to see atoms so important? Atoms are the basic building blocks
of all the matter in the universe. You will learn more about atoms and matter when you read this chapter.
Courtesy o f National Institute o f Standards and Technology.www.nist.gov/pml/general/stm/index.c fm.Public Domain.