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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

It is common to add Epson salts to bath water when one has been over exercising and has sore muscles. What is the primary intermolecular force that exists between magnesium sulfate, the primary in Epson salts, and the water in the bathtub?

dipole-dipole forces

ion-dipole forces

London forces

Hydrogen bonding

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Verified step by step guidance

Identify the chemical nature of magnesium sulfate (MgSO₄). It is an ionic compound composed of magnesium ions (Mg²⁺) and sulfate ions (SO₄²⁻).

Recognize that water (H₂O) is a polar molecule with a partial positive charge on the hydrogen atoms and a partial negative charge on the oxygen atom.

Understand that when an ionic compound like magnesium sulfate dissolves in water, the ions interact with the polar water molecules.

Determine the type of intermolecular force: Ion-dipole forces occur between the charged ions of the solute (Mg²⁺ and SO₄²⁻) and the dipole of the solvent (water molecules).

Conclude that the primary intermolecular force between magnesium sulfate and water is ion-dipole forces, as the ions are attracted to the opposite partial charges on the water molecules.