~ Which element is your favorite?

~ Why?

Warm Up

Chemical Symbols

• The element names can be very long to write over and over.

• Scientist have agreed on a system of symbols to represent the elements.

• Some of these symbols have 1, 2 or 3 letters.

• The first letter is ALWAYS capitalized and the others (if there are any) are ALWAYS lowercase.

AFM image of silicon, obtained with a qPlus force sensor with a single crystal silicon tip. Image size 3.3 nm x 3.3 nm. [Ann. Phys. (Leipzig) 10, 887 (2001)].