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

21. Nuclear Chemistry

Intro to Radioactivity

General Chemistry

21. Nuclear Chemistry

Intro to Radioactivity

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Multiple Choice

Which of the following types of radiation is the most penetrating?

Beta particles

Positrons

Alpha particles

Gamma radiation

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Verified step by step guidance

Understand the types of radiation: Alpha particles, Beta particles, Positrons, and Gamma radiation. Each type has different properties and levels of penetration.

Alpha particles are composed of 2 protons and 2 neutrons, making them relatively large and heavy. They have low penetration power and can be stopped by a sheet of paper or human skin.

Beta particles are high-energy, high-speed electrons or positrons emitted by certain types of radioactive nuclei. They have greater penetration power than alpha particles but can be stopped by a few millimeters of aluminum.

Positrons are the antimatter counterparts of electrons. They have similar penetration power to beta particles, as they are also high-energy particles.

Gamma radiation consists of high-energy photons and is the most penetrating type of radiation. It can pass through several centimeters of lead or meters of concrete, making it much more penetrating than alpha particles, beta particles, or positrons.