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

1. Intro to General Chemistry

Classification of Matter

General Chemistry

1. Intro to General Chemistry

Classification of Matter

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Multiple Choice

Which of the following best describes the difference between a colloid and a suspension?

In a colloid, the dispersed particles do not settle out upon standing, whereas in a suspension, the particles eventually settle out.

Colloids contain only solid particles, while suspensions contain only liquid particles.

Colloids can be separated by filtration, but suspensions cannot.

Suspensions are always transparent, while colloids are always opaque.

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Verified step by step guidance

Step 1: Understand the definitions of colloids and suspensions. A colloid is a mixture where very small particles are dispersed throughout another substance, and these particles do not settle out over time. A suspension is a mixture where larger particles are dispersed, and these particles will eventually settle out due to gravity.

Step 2: Recognize that the key difference lies in the size of the dispersed particles and their behavior over time. Colloidal particles are small enough to remain evenly distributed without settling, while suspension particles are larger and will settle if left undisturbed.

Step 3: Evaluate the given answer choices by comparing them to the definitions. For example, the statement that colloids contain only solid particles and suspensions only liquid particles is incorrect because both can involve solids, liquids, or gases in different phases.

Step 4: Consider the separation methods. Colloids cannot be separated by simple filtration because their particles are too small, whereas suspensions can often be separated by filtration since their particles are larger.

Step 5: Analyze the optical properties. Suspensions are usually not transparent because of the larger particles scattering light, but colloids can be either opaque or translucent depending on the system, so the statement about transparency is not universally true.