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

12. Introduction to Organic Chemistry

Condensed Formula

GOB Chemistry

12. Introduction to Organic Chemistry

Condensed Formula

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Problem 1b

Textbook Question

Identify each of the following as a formula of an organic or inorganic compound. For an organic compound, indicate if represented as molecular formula, expanded, or condensed structural formula:
b. CH₃―CH₂―CH₂―CH₃

Verified step by step guidance

Step 1: Understand the distinction between organic and inorganic compounds. Organic compounds primarily contain carbon and hydrogen atoms, often with other elements like oxygen, nitrogen, or sulfur. Inorganic compounds typically do not have carbon-hydrogen bonds.

Step 2: Analyze the given formula, CH₃―CH₂―CH₂―CH₃. This structure contains only carbon (C) and hydrogen (H) atoms, which is characteristic of an organic compound.

Step 3: Recognize the type of formula representation. The given formula shows the connectivity of atoms explicitly, with each carbon atom and its attached hydrogen atoms represented. This is known as an expanded structural formula.

Step 4: Confirm the classification. Since the compound contains carbon and hydrogen atoms and is represented in an expanded structural formula, it is an organic compound.

Step 5: Summarize the findings. The compound CH₃―CH₂―CH₂―CH₃ is an organic compound, and its formula is presented as an expanded structural formula.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Organic Compounds

Organic compounds are primarily composed of carbon atoms, often in combination with hydrogen, oxygen, nitrogen, and other elements. They are characterized by their carbon-based structures and can form a vast array of molecules, including hydrocarbons, alcohols, and acids. The presence of carbon-hydrogen bonds is a key feature that distinguishes organic compounds from inorganic ones.

Structural Formulas

Structural formulas represent the arrangement of atoms within a molecule, illustrating how atoms are bonded together. There are different types of structural formulas: molecular formulas show the number of each type of atom, expanded structural formulas depict all bonds explicitly, and condensed structural formulas provide a simplified representation. Understanding these formats is essential for interpreting the structure and properties of organic compounds.

Hydrocarbons

Hydrocarbons are organic compounds consisting entirely of hydrogen and carbon. They can be classified into aliphatic (straight or branched chains) and aromatic (ring structures) hydrocarbons. The example given, CH₃―CH₂―CH₂―CH₃, is a straight-chain alkane known as butane, which is a saturated hydrocarbon with single bonds between carbon atoms, highlighting the fundamental nature of hydrocarbons in organic chemistry.

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Related Practice

Textbook Question

Draw the following three isomers of C₅H₁₂ as condensed structures:

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Open Question

When pentane is exposed to Br₂ in the presence of light, a halogenation reaction occurs. Write the formulas of:

a. All possible products containing only one bromine

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Textbook Question

Draw the following three isomers of C₅H₁₂ as condensed structures:

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Textbook Question

Identify each of the following as a formula of an organic or inorganic compound. For an organic compound, indicate if represented as molecular formula, expanded, or condensed structural formula:

e. CH₃―CH₂―CH₂―CH₂―CH₃

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Textbook Question

Describe the difference between a Lewis structure and a condensed structure in terms of atoms and bonds shown in the structures.

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Textbook Question

Draw a condensed structure for each of the following compounds:

(b)

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