Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

1. Intro to General Chemistry

Classification of Matter

General Chemistry

1. Intro to General Chemistry

Classification of Matter

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Multiple Choice

For the solid forms of the following elements, which one is most likely to be classified as a molecular solid?

Silicon (Si)

Sodium (Na)

Iodine (I2)

Iron (Fe)

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Verified step by step guidance

Understand the types of solids: Molecular solids are composed of molecules held together by relatively weak intermolecular forces (like van der Waals forces or hydrogen bonds), rather than by strong covalent or metallic bonds.

Analyze each element or substance given: Sodium (Na) and Iron (Fe) are metals, so they form metallic solids characterized by a lattice of metal cations surrounded by a sea of delocalized electrons.

Silicon (Si) is a metalloid that forms a giant covalent network solid, where atoms are bonded covalently in a continuous three-dimensional network, making it a network solid rather than molecular.

Iodine (I2) exists as discrete diatomic molecules held together in the solid state by weak van der Waals forces, which is characteristic of molecular solids.

Therefore, identify Iodine (I2) as the molecular solid because it consists of individual molecules held together by intermolecular forces, unlike the other elements which form metallic or network solids.