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

14. Solutions

Osmotic Pressure

General Chemistry

14. Solutions

Osmotic Pressure

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Multiple Choice

Which of the following characterizes a colloid?

Brownian movement

Tyndall effect

Particle sizes greater than 1 μm

Both A and B

All of the above

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Verified step by step guidance

Understand the definition of a colloid: A colloid is a mixture where one substance is dispersed evenly throughout another. The particles in a colloid are larger than those in a solution but smaller than those in a suspension.

Examine Brownian movement: This refers to the random motion of particles suspended in a fluid, resulting from their collision with fast-moving molecules in the fluid. Colloidal particles exhibit Brownian movement due to their small size.

Explore the Tyndall effect: This is the scattering of light by particles in a colloid. When light passes through a colloidal mixture, the particles scatter the light, making the path of the light visible. This effect is a characteristic of colloids.

Consider particle size: Colloidal particles typically range from 1 nm to 1 μm in size. Particles greater than 1 μm are generally too large to be considered colloidal and are more characteristic of suspensions.

Evaluate the options: Based on the definitions and characteristics, both Brownian movement and the Tyndall effect are key features of colloids. Particle sizes greater than 1 μm do not characterize colloids, so the correct answer is both A and B.