Summary:
This video talks about the molecular structure of water. Water has a chemical formula of H2O, which means that 2 hydrogen atoms form a covalent bond with one oxygen atom. A covalent bond is a bond that electrons share. The reason we know that the water molecule has a covalent bond is because oxygen has six valence electrons and hydrogen has one valence electron. Then, with 2 hydrogen atoms and one oxygen atom, you get eight electrons which makes this atom stable since it has eight electrons in its outer shell (the octet rule). There is also a hydrogen bond occurring. A hydrogen bond is an attraction between a hydrogen atom and an electronegative atom. The two hydrogen atoms in water are attracted to the oxygen atom which is an electronegative atom. When two water molecule bond with each other, it forms another hydrogen bond.
Relevance:
This video talks about the structure of the molecule which we talked about in class in Unit 2. It also talks about covalent bonds and hydrogen bonds which we talked about and wrote outlines about when we were drawing bohr models and lewis dot structures. In the video the woman makes one of these models which we did many times in class.
Video Information:
URL: http://www.sophia.org/molecular-structure-of-water/molecular-structure-of-water--4-tutorial
Author: Amanda Soderlind
Published on: April 2, 2012
Are there any other polar molecules than water?
ReplyDeleteYes, because what makes a polar molecule is the arrangement of bonds producing a net dipole. A dipole is a molecule which has both positive and negative charges. Other examples of polar molecules are Ammonia, Hydrochloric Acid, Sulfur Dioxide, Hydrogen Sulfide, and Carbon Monoxide.
ReplyDeleteHI ALLIE! What makes an atom electronegative?
ReplyDeleteHI RACH! The amount of pull that one atom exerts on the electrons that it is sharing with other atoms is what makes it electronegative
ReplyDelete