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 2e

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

Verified step by step guidance

Step 1: Recognize the type of compound. Organic compounds are primarily composed of carbon (C) and hydrogen (H), and may also include oxygen (O), nitrogen (N), sulfur (S), or halogens. Inorganic compounds typically do not have carbon-hydrogen bonds.

Step 2: Analyze the given formula. The formula provided, CH₃―CH₂―CH₂―CH₂―CH₃, consists entirely of carbon (C) and hydrogen (H) atoms, indicating it is an organic compound.

Step 3: Determine the type of formula representation. Organic compounds can be represented in different ways: molecular formula (e.g., C₅H₁₂), expanded structural formula (showing all bonds explicitly), or condensed structural formula (grouping atoms to simplify the structure).

Step 4: Identify the specific representation. The given formula explicitly shows each carbon atom and its attached hydrogen atoms, as well as the bonds between the carbon atoms. This is an expanded structural formula.

Step 5: Conclude the classification. The compound is an organic compound, and the formula is represented 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 the presence of carbon-hydrogen (C-H) bonds. Common examples include hydrocarbons, alcohols, and acids. Understanding the structure and bonding in organic compounds is essential for identifying their properties and reactions.

Structural Formulas

Structural formulas represent the arrangement of atoms within a molecule, showing how atoms are connected. There are different types of structural formulas: molecular formulas indicate the number of each type of atom, expanded structural formulas depict all bonds explicitly, and condensed structural formulas provide a simplified view. Recognizing these formats is crucial for interpreting chemical structures accurately.

Hydrocarbons

Hydrocarbons are organic compounds consisting solely of hydrogen and carbon. They can be classified into aliphatic (straight or branched chains) and aromatic (ring structures). The example given, CH₃―CH₂―CH₂―CH₂―CH₃, is a straight-chain alkane, specifically pentane. Understanding hydrocarbons is fundamental in organic chemistry, as they serve as the backbone for more complex organic molecules.

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Related Practice

Textbook Question

Draw the following three isomers of C₅H₁₂ as condensed structures:

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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:

b. CH₃―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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