Chapter
4

Atomic Structure
Chapter Preview 
4.1 Studying Atoms4.3 Modern Atomic Theory
4.2 The Structure of an Atom
  



These images of carbon were magnified as much as 20 million times. Color was added to the images to highlight features. The upper left and right images are of graphite—the carbon used in pencils. The lower left image is of hollow spheres of carbon, one nanometer in diameter. The lower right image shows carbon tubes arranged in the shape of an A.
 
 

How do science concepts apply to your world? Here are some questions you'll be able to answer after you read this chapter.

 
 

How Can You Study Objects That Are Not Visible?

Procedure

  1. Make and record observations about the contents of two sealed bags. Use your senses of touch, smell, and hearing to help you make your observations.
  2. Predicting   Based on your observations, make a prediction about what objects could be in each bag. Decide whether there is a single object or more than one object in each bag.
  3. Your teacher will list on the chalkboard all of the predictions from the class.

Think About It

  1. Inferring   What evidence did you use to predict what objects were in the bags and how many objects were in the bags?
  2. Evaluating and Revising   Record one of the predictions listed that fits your observations as well as or better than your own prediction.
  3. Designing Experiments   Propose an experiment that would test the prediction.

 
 
 
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