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

Introduction to Organic Chemistry

GOB Chemistry

12. Introduction to Organic Chemistry

Introduction to Organic Chemistry

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Problem 2b

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. K₃PO₄

Verified step by step guidance

Step 1: Understand the distinction between organic and inorganic compounds. Organic compounds primarily contain carbon atoms bonded to hydrogen, oxygen, nitrogen, or other elements, while inorganic compounds typically do not have carbon-hydrogen bonds.

Step 2: Analyze the given formula, K₃PO₄. This formula represents a compound composed of potassium (K), phosphorus (P), and oxygen (O). Notice that it does not contain carbon (C) or hydrogen (H), which are key indicators of organic compounds.

Step 3: Conclude that K₃PO₄ is an inorganic compound because it lacks carbon-hydrogen bonds and is composed of metal and nonmetal elements.

Step 4: Recognize that K₃PO₄ is written as a molecular formula, which provides the exact number of each type of atom in the compound but does not show the arrangement of atoms.

Step 5: Summarize the classification: K₃PO₄ is an inorganic compound represented as a molecular formula.

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Key Concepts

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

Organic vs. Inorganic Compounds

Organic compounds primarily contain carbon and are often associated with living organisms, while inorganic compounds typically do not contain carbon-hydrogen bonds. Examples of organic compounds include hydrocarbons and alcohols, whereas inorganic compounds include salts and minerals. Understanding this distinction is crucial for classifying chemical formulas correctly.

Chemical Formulas

Chemical formulas represent the composition of a compound. A molecular formula shows the number and type of atoms in a molecule, while expanded structural formulas depict the arrangement of atoms and bonds. Condensed structural formulas provide a simplified representation, often omitting some bonds. Recognizing these formats helps in identifying the nature of the compound.

Phosphate Compounds

Phosphate compounds, such as K₃PO₄ (potassium phosphate), are inorganic salts containing the phosphate ion (PO₄³⁻). They are commonly used in fertilizers and have various applications in biochemistry. Identifying K₃PO₄ as an inorganic compound is essential for understanding its properties and uses in different contexts.

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Related Practice

Textbook Question

Identify each of the following properties as more typical of an organic or inorganic compound:

c. contains carbon and hydrogen

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Textbook Question

Identify each of the following properties as more typical of an organic or inorganic compound:

b. is a gas at room temperature

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Textbook Question

Identify each of the following properties as more typical of an organic or inorganic compound:

c. contains covalent bonds

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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:

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Textbook Question

Match each of the following physical and chemical properties with ethane, C₂H₆ or sodium bromide, NaBr:

a. boils at -89 °C

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Textbook Question

Match each of the following physical and chemical properties with ethane, C₂H₆ or sodium bromide, NaBr:

b. burns vigorously in air

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Multiple Choice

Tetrachloroethane (C₂H₂Cl₄) has been used as an industrial solvent to produce paint removers and pesticides. It is classified as an organic compound. Which feature of this molecule makes it organic?

Which of the following compounds has the most branched structure?