In this video lecture, Chemguy gives all the basic shapes for 4, 3, and 2 effective pairs around the central atom.

1. Periodic Table I: An Overview
2. Periodic Table II: Subatomic Particles and Isotopes
3. Compounds I: Ionic Compounds
4. Compounds II: Polyatomic Species
5. Compounds III: Non-metals
6. Compounds IV: Acid Nomenclature
7. Chemical Bonding I: Electronegativity and Polarity
8. Chemical Bonding II: Lewis Electron Dot Diagrams
9. Chemical Bonding III: Molecular Shapes
10. Chemical Bonding IV: Intermolecular Bonding
11. The Mole I: Avogadro's Number
12. The Mole II: Molar Mass Calculation
13. The Mole III: Mass to Moles & Mass to Atoms
14. Balancing I: Balancing Composition Reactions
15. Balancing II: Hydrocarbon Combustion Reaction
16. Balancing III: Single Replacement Reactions
17. Balancing IV: Double Replacement Reactions
18. Stoichiometry I: Word Problems
19. Stoichiometry II: Finding Mass of Product
20. Stoichiometry III: Limiting Reagent
21. Solutions I: Solution Properties
22. Solutions II: Factors Affecting Solubility
23. Solutions III: Equilibrium in a Saturated Solution
24. Solutions IV: Calculating Molarity
25. Solutions V: Dilution Calculations
26. Solutions VI: Dissociation Stoichiometry
27. Solutions VII: Net Ionic Equations
28. Solutions VIII: Titration Apparatus
29. Gases I: atm, kPa and torr
30. Gases II: Boyles' Law
31. Gases III: Charles' Law
32. Gases IV: Ideal Gas Law

In this course, Rob Lederer (Chemguy) gives an introduction to General Chemistry for Junior High School. Topics included in these lectures are: Compounds, Stoichiometry, Gases, Solutions, Balancing, Chemical Bonding, the Mole and many more.

Perfect for junior high school students being introduced to Chemistry, Chemguy provides us with great and easy-to-follow lessons, all made possible thanks to his great enthusiasm, passion for the subject and sense of humor.