Table of contents

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1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

2. Atoms & Elements

The Atom

General Chemistry

2. Atoms & Elements

The Atom

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Multiple Choice

Which subatomic particle determines the identity of an element?

Neutron

Electron

Proton

Photon

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Verified step by step guidance

Understand that elements are defined by their atomic number, which is the number of protons in the nucleus of an atom.

Recall that each element on the periodic table has a unique atomic number, corresponding to the number of protons.

Recognize that neutrons and electrons do not determine the identity of an element. Neutrons can vary in number, leading to isotopes, and electrons can be gained or lost, forming ions.

Note that photons are particles of light and do not play a role in defining the identity of an element.

Conclude that the subatomic particle that determines the identity of an element is the proton, as it defines the atomic number and thus the element itself.