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

2. Atoms and the Periodic Table

Periodic Table: Group Names

GOB Chemistry

2. Atoms and the Periodic Table

Periodic Table: Group Names

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1:19 minutes

Problem 7a

Textbook Question

Identify the group or period number described by each of the following:
a. contains C, N, and O

Verified step by step guidance

Step 1: Recall that the periodic table is organized into groups (vertical columns) and periods (horizontal rows). Groups are numbered from 1 to 18, and periods are numbered from 1 to 7.

Step 2: Identify the elements mentioned in the problem: C (Carbon), N (Nitrogen), and O (Oxygen). Locate these elements on the periodic table.

Step 3: Observe that C, N, and O are all located in the same period (horizontal row) of the periodic table. Determine the period number by counting the rows from the top.

Step 4: Notice that these elements are also in different groups (vertical columns). Carbon is in Group 14, Nitrogen is in Group 15, and Oxygen is in Group 16. Confirm the group numbers by checking the periodic table.

Step 5: Summarize the findings: The elements C, N, and O are in Period 2 of the periodic table, and their respective groups are 14, 15, and 16.

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Key Concepts

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

Group 14 (IVA) Elements

Group 14 of the periodic table, also known as the carbon group, includes carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), and flerovium (Fl). This group is characterized by having four valence electrons, which allows for a variety of bonding configurations. Carbon, in particular, is essential for organic chemistry and life, while silicon is crucial in technology and electronics.

Group 15 (VA) Elements

Group 15 of the periodic table, known as the nitrogen group, includes nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). These elements typically have five valence electrons, leading to diverse chemical behaviors. Nitrogen is vital for biological processes, while phosphorus is key in energy transfer and DNA structure.

Group 16 (VIA) Elements

Group 16, or the chalcogens, consists of oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po). These elements have six valence electrons, which influences their reactivity and the types of compounds they form. Oxygen is essential for respiration in living organisms and is a key component of water, while sulfur is important in various industrial processes.

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