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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0:45 minutes

Problem 17a

Textbook Question

Identify each of the following as describing either a proton, a neutron, or an electron:
a. has the smallest mass

Verified step by step guidance

Step 1: Begin by recalling the relative masses of subatomic particles. A proton and a neutron have similar masses, approximately 1 atomic mass unit (amu), while an electron has a much smaller mass, approximately 1/1836 of the mass of a proton.

Step 2: Compare the masses of the three particles. Since the electron's mass is significantly smaller than that of a proton or neutron, it is the particle with the smallest mass.

Step 3: Understand the significance of this property. The small mass of the electron allows it to move rapidly around the nucleus, contributing to the atom's overall structure and chemical behavior.

Step 4: Confirm that the correct identification for the particle with the smallest mass is the electron.

Step 5: Review the concept of subatomic particles and their properties to reinforce understanding of their roles in atomic structure.

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Key Concepts

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

Proton

A proton is a positively charged subatomic particle found in the nucleus of an atom. It has a relative mass of approximately 1 atomic mass unit (amu) and plays a crucial role in determining the atomic number of an element, which defines its identity.

Neutron

A neutron is a neutral subatomic particle also located in the nucleus of an atom. It has a mass similar to that of a proton, approximately 1 amu, and contributes to the atomic mass of an element, influencing its stability and isotopic composition.

Electron

An electron is a negatively charged subatomic particle that orbits the nucleus of an atom. It has a significantly smaller mass than protons and neutrons, approximately 1/1836 of an amu, and is essential for chemical bonding and the formation of molecules.