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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0:50 minutes

Problem 95b

Textbook Question

Complete the following statements:
b. In an atom, the number of electrons is equal to the number of _____.

Verified step by step guidance

Understand the structure of an atom: An atom consists of a nucleus containing protons and neutrons, surrounded by electrons in orbitals.

Recall the concept of atomic neutrality: Atoms are electrically neutral, meaning the number of positively charged protons in the nucleus is equal to the number of negatively charged electrons surrounding the nucleus.

Identify the relationship between protons and electrons: Since the atom is neutral, the number of electrons is equal to the number of protons.

Apply this concept to the question: The blank in the statement should be filled with 'protons' because the number of electrons equals the number of protons in a neutral atom.

Review the periodic table for further understanding: The atomic number of an element represents the number of protons in an atom, which also equals the number of electrons in a neutral atom.

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Key Concepts

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

Electrons

Electrons are negatively charged subatomic particles that orbit the nucleus of an atom. They play a crucial role in chemical bonding and reactions, as their arrangement determines an atom's reactivity and properties. In a neutral atom, the number of electrons is equal to the number of protons, balancing the overall charge.

Protons

Protons are positively charged subatomic particles found in the nucleus of an atom. The number of protons in an atom defines its atomic number and determines the element's identity. For example, hydrogen has one proton, while carbon has six. The balance between protons and electrons is essential for the stability of the atom.

Atomic Structure

Atomic structure refers to the arrangement of subatomic particles within an atom, including protons, neutrons, and electrons. Understanding atomic structure is fundamental to grasping how atoms interact, form bonds, and create molecules. The balance of protons and electrons is key to an atom's neutrality and its chemical behavior.