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

Subatomic Particles (Simplified)

GOB Chemistry

2. Atoms and the Periodic Table

Subatomic Particles (Simplified)

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1:57 minutes

Problem 73c

Textbook Question

Which statements completed with a to e will be true and which will be false?
An atom of N compared to an atom of Li has a larger (greater)
c. number of protons

Verified step by step guidance

Step 1: Understand the question. The problem asks us to compare the number of protons in an atom of nitrogen (N) and an atom of lithium (Li) to determine if the statement is true or false.

Step 2: Recall the definition of protons. Protons are positively charged particles found in the nucleus of an atom. The number of protons in an atom is equal to its atomic number, which is unique for each element.

Step 3: Look up the atomic numbers of nitrogen (N) and lithium (Li) on the periodic table. Nitrogen has an atomic number of 7, meaning it has 7 protons. Lithium has an atomic number of 3, meaning it has 3 protons.

Step 4: Compare the number of protons in nitrogen and lithium. Since 7 (protons in N) is greater than 3 (protons in Li), the statement 'An atom of N compared to an atom of Li has a larger number of protons' is true.

Step 5: Conclude that the statement completed with 'c. number of protons' is true based on the comparison of atomic numbers.

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Key Concepts

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

Atomic Structure

Atomic structure refers to the composition of an atom, which includes protons, neutrons, and electrons. Protons are positively charged particles found in the nucleus, while neutrons are neutral. The number of protons in an atom defines its atomic number and determines the element's identity. For example, nitrogen (N) has 7 protons, while lithium (Li) has 3 protons.

Atomic Number

The atomic number is the number of protons in the nucleus of an atom and is unique to each element. It determines the element's position in the periodic table and its chemical properties. For instance, nitrogen's atomic number is 7, indicating it has 7 protons, while lithium's atomic number is 3, indicating it has 3 protons. This concept is crucial for comparing elements.

Comparison of Elements

When comparing elements, one often looks at their atomic properties, such as the number of protons, neutrons, and electrons. In this context, comparing nitrogen and lithium involves examining their atomic numbers and understanding how these differences affect their chemical behavior. For example, since nitrogen has more protons than lithium, it has a greater atomic number, which influences its reactivity and bonding characteristics.