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

13. Alkenes, Alkynes, and Aromatic Compounds

Naming Alkynes

GOB Chemistry

13. Alkenes, Alkynes, and Aromatic Compounds

Naming Alkynes

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Multiple Choice

Draw a structure for 4-ethyl-7-phenyl-2-heptyne.

Chemical structure of 4-ethyl-7-phenyl-2-heptyne.

Chemical structure of 4-ethyl-7-phenyl-2-heptyne with a different orientation.

Another view of the chemical structure of 4-ethyl-7-phenyl-2-heptyne.

Chemical structure of 4-ethyl-7-phenyl-2-heptyne with a phenyl group.

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Verified step by step guidance

Identify the main chain: The name '4-ethyl-7-phenyl-2-heptyne' indicates that the main chain is 'heptyne', which is a seven-carbon chain with a triple bond.

Locate the triple bond: The '2-heptyne' part of the name tells us that the triple bond is between the second and third carbon atoms in the chain.

Add substituents: The '4-ethyl' indicates an ethyl group (CH2CH3) is attached to the fourth carbon of the main chain.

Add the phenyl group: The '7-phenyl' indicates a phenyl group (C6H5) is attached to the seventh carbon of the main chain.

Draw the structure: Start with the seven-carbon chain, add the triple bond between C2 and C3, attach the ethyl group to C4, and the phenyl group to C7. Ensure all carbons have four bonds, adding hydrogen atoms as necessary.