Today in class Mr. Paek went over any questions we had about the Lewis structure.

The Lewis structure is the drawing we draw with the dots. Today we got new worksheets; we got pages 16-20 and, learned something new. We learned about molecularshapes, and how to draw the shape.

There are different names for these shapes: linear, trigonal planar, trigonal pyramid, bent, and tetrahedral.

The name of the shape is linear id its 180 degreesand is on one flat plane. The shape of a linear would look like this:

The name of the shape is trigonal planar is there are three bonds, no lone pairs, and are on one plane. The shape of a trigonal planar is:

The name of the shape is trigonal pyramid is there are lone pairs of electrons, and if it is three dimensional. It would be three dimensional because, the lone pairs would go on top and push the three other bonds downward, making the shape look like this:

The name of the shape is bent if there are two bonds and the lone pairs push the two bonds downward. A bent shape would look like this:

The last name we learned is tetrahedral. Tetrahedral is just like trigonal pyramid, but rather than the lone pair it has an extra bond. The extra bond will push the other three bonds downward. A tetrahedral shape would look like this:

When drawing any shape, first look at the Lewis structure of the element, and only draw in the dots for the center element, but draw in the correct amount of bonds. When drawing a trigonal pyramid the three bonds should be facing down because of the lone pairs of electrons forcing it to go downward. Also, the two pairs of bonds for the bent shape is also facing downward because of the lone pairs of electrons. Same with the tetrahedral, because of the extra bond it forces the 3 other bonds to go downward. (the pictures are shown above).

Homework:- finish pages 16-19 (new work sheets we got today) and the two worksheets given on Friday are due tomorrow for credit.

Upcoming quizzes or tests:- there is a quiz tomorrow. The test is after Thanksgiving break.

Next Scriber:- Tima Tito