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

2. Atoms and the Periodic Table

Periodic Table: Phases (Simplified)

GOB Chemistry

2. Atoms and the Periodic Table

Periodic Table: Phases (Simplified)

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Multiple Choice

Which of the following elements is a nonmetal that is a polyatomic solid?

Carbon

Oxygen

Sulfur

Radon

Cesium

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Verified step by step guidance

Identify the elements listed in the problem: Carbon, Oxygen, Sulfur, Radon, and Cesium.

Recall the definition of a nonmetal: Nonmetals are elements that typically have high electronegativities and ionization energies, and they are poor conductors of heat and electricity.

Understand what a polyatomic solid is: A polyatomic solid is a solid composed of molecules that contain more than one atom bonded together.

Analyze each element: Carbon can form polyatomic structures like graphite and diamond, but it is not typically referred to as a polyatomic solid. Oxygen is a diatomic gas at room temperature. Radon is a noble gas, and Cesium is an alkali metal.

Recognize that Sulfur is a nonmetal that forms polyatomic molecules, specifically S8 rings, which are solid at room temperature, making it the correct answer.