Table of contents

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 one of the following is the smallest unit of matter that has all the properties of an element?

Proton

Electron

Molecule

Atom

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Verified step by step guidance

Understand the definition of an atom: An atom is the smallest unit of an element that retains all the chemical properties of that element.

Consider the properties of a proton: A proton is a subatomic particle found in the nucleus of an atom, but it does not have all the properties of an element by itself.

Consider the properties of an electron: An electron is a subatomic particle with a negative charge, found outside the nucleus of an atom, and it also does not have all the properties of an element by itself.

Consider the properties of a molecule: A molecule is a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. It is not the smallest unit of an element.

Conclude that an atom is the smallest unit of matter that has all the properties of an element, as it consists of protons, neutrons, and electrons, and retains the chemical identity of the element.