Introduction

Organization

Have you ever organized an area — maybe your closet, your drawers, or some shelves? How did you organize it? Probably you found things with similar characteristics and put them together in groups. In your closet you may have all your pants hanging together and then all your shirts. Or maybe, you hang everything according to color? Whatever it is, we all have experience organizing and grouping.

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The Periodic Table

Scientist are the same way. Remember in the last unit you learned about elements substance made up of the same type of atom . There are over 100 known elements that compose basically all of the matter we see around us, and scientists discovered a way to organize them in a table based on different characteristics or properties.

Hopefully, you have seen this table before; it's called the Periodic Table of Elements, and it is the focus of the next few lessons in this unit.

You can see a larger version of this periodic table of elements here.



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Lesson Objectives

Following successful completion of this lesson, students will be able to...

  • Define properties, periodic table, and main group elements
  • Illustrate the composition of atoms using the periodic table
  • Identify main group elements

Enduring Understandings

  • The Periodic Table of Elements is a useful tool for organizing elements based on properties and patterns and can be used to predict the composition and properties of elements.
  • Atoms consist of subatomic particles whose arrangement is responsible for the properties of the atom.

The above objectives correspond with the Alabama Course of Study: Physical Science standards: 1.

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