Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

8. Gases, Liquids and Solids

Intermolecular Forces (Simplified)

GOB Chemistry

8. Gases, Liquids and Solids

Intermolecular Forces (Simplified)

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Multiple Choice

Which of these molecules exhibit the most number of different intermolecular forces?

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Identify the types of intermolecular forces: The main types of intermolecular forces are London dispersion forces, dipole-dipole interactions, and hydrogen bonding.

Analyze the first molecule (propane): Propane (C3H8) is a nonpolar molecule, so it primarily exhibits London dispersion forces.

Analyze the second molecule (formaldehyde): Formaldehyde (CH2O) is a polar molecule due to the difference in electronegativity between carbon, hydrogen, and oxygen, and the presence of a carbonyl group (C=O). It exhibits dipole-dipole interactions and London dispersion forces.

Consider hydrogen bonding: Hydrogen bonding occurs in molecules where hydrogen is directly bonded to highly electronegative atoms like nitrogen, oxygen, or fluorine. Formaldehyde does not have hydrogen bonding because the hydrogen atoms are not bonded to the oxygen atom.

Compare the molecules: Propane only exhibits London dispersion forces, while formaldehyde exhibits both London dispersion forces and dipole-dipole interactions. Therefore, formaldehyde exhibits a greater variety of intermolecular forces.