Sharing is Caring

Today, Mr. Lieberman had a pack of sour patch kids. He shared them with Zoe by giving her 1 of them and eating the rest. With a second pack of candy, he gave half to Zoe and the rest he ate. With a third, he gave the whole pack to Katie, taking none for herself. We learned that Mr. Lieberman was sharing his candy as molecules share electrons.
First, we learned about polar and non-polar. These are only between 2 nonmetals.
Polar covalent bonds are where electrons are not shared equally between molecules, and the electronegativity difference is between 0.4 and 1.7.
Non-polar covalent bonds are where electrons are shared equally between molecules, and the electronegativity different is between 0 and 0.4.
An example of a non-polar covalent bond is C-C. It is said to be like "tug of war with your twin". No one would win and the forces trying to win, or gain the electrons are equal, so the electrons would be shared equally. The electronegativity for the two atoms are the same, so they are equally pulling for the electrons. This is the scenario where Mr. Lieberman gave half his candy to Zoe and kept half for himself.
An example for a polar covalent bond would be C-F. The electronegativity for fluorine is strong than that of carbon, and therefore, there is an unequal share of electrons, because flourine would be winning the game of tug of war with carbon. Fluorine becomes more negative because the electrons are closer to fluorine than carbon, even though they are still shared with carbon, so that would mean fluorine is partially negative. Carbon has less of a pulling force on the electrons so it is partially positive. The opposite ends (+ and -) create a dipole. This is the scenario where Mr. Lieberman gave one piece of candy to Zoe and ate the rest.
Ionic bonds are where one molecule gets all the electrons, having a complete transfer, even though this is considered sharing. The electronegativity of one nonmetal atom is so much greater than the other metal atom that it pulls the electrons away. This is the scenario where Mr. Lieberman gave all his candy away to Katie.
We also had a pop quiz at the end of class.
Have a great rest of the weekend everyone!
~Kaitlyn Y.
The next scribe will be Elim.