Chemical Bonding

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A series of free High School Chemistry Video Lessons.

In this video, we will learn

• Hydrates
• Lewis Electron Dot Diagram
• Molecular Polarity

Hydrates
Hydrates are solid compounds which contain water. This water is included with the chemical formula of the compound because there is a set ratio of water to compound.
The properties and structure of hydrates. This lesson introduces hydrates as a type of compound, and also shows how to name and write formulas for hydrated salts. Lewis Electron Dot Diagram
Lewis Electron Dot Diagrams are used to visually depict bonding by representing valence electrons as dots surrounding an elemental symbol. These dots can be on any of the four sides of the symbol, each side representing a different orbital (1 s orbital and 3 p orbitals).
How to draw Lewis Electron Dot Diagrams. The following lesson looks at drawing Electron Dot or Lewis Dot diagrams of various ionic and covalent compounds, including polyatomic compounds.

Polarity
The eletronegativity of the atoms involved in bonding determines the polarity of the bond. Electronegativity is a quantitative measure of how tightly an atom holds onto its electrons. Polarity has a great effect on solubility and other chemical interactions because polar and non-polar molecules do not like to interact.
How electronegativity contributes to a molecules' polarity. Molecular Polarity
This lesson discusses what molecule polarity is, as well as why some molecules are polar or nonpolar. Molecule symmetry and bond types are related to the polarity of the molecule.