2.01 Elements and The Periodic Table

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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