Table of contents

1. Intro to General Chemistry3h 46m
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 51m
7. Gases3h 52m
8. Thermochemistry2h 38m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 10m
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 34m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

2. Atoms & Elements

Millikan Oil Drop Experiment

General Chemistry

2. Atoms & Elements

Millikan Oil Drop Experiment

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Multiple Choice

In the oil drop experiment,

all the drops had a charge equal to –1.60 × 10^–19 C.

all the drops were assumed to have adsorbed the same number of electrons.

since each drop likely adsorbed a different number of electrons, the charge on each drop had to be a multiple of the electron’s charge.

some of the drops contained fractions of electrons.

drops of oil were passed through a very thin film of gold atoms and their behavior was observed.

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Verified step by step guidance

Understand the context of the oil drop experiment: This experiment, conducted by Robert Millikan, was designed to measure the elementary electric charge (the charge of an electron).

Recognize the significance of the charge value: The charge of an electron is approximately -1.60 × 10^-19 C. This value is fundamental in understanding the quantization of electric charge.

Consider the quantization of charge: In the experiment, each oil drop could have a charge that is a multiple of the electron's charge, meaning the total charge on a drop is an integer multiple of -1.60 × 10^-19 C.

Analyze the statement about adsorbed electrons: Since each drop likely adsorbed a different number of electrons, the charge on each drop would vary but still be a multiple of the electron's charge.

Clarify misconceptions: The statement that some drops contained fractions of electrons is incorrect because electrons are indivisible in this context, and the charge on any drop must be a whole number multiple of the electron's charge.