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 statement best describes the difference between a homogeneous and a heterogeneous mixture?

A homogeneous mixture is always a solid, while a heterogeneous mixture is always a liquid.

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has visibly distinct parts or phases.

A homogeneous mixture can be separated by filtration, while a heterogeneous mixture cannot.

A homogeneous mixture contains only one type of element, while a heterogeneous mixture contains two or more types of elements.

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Verified step by step guidance

Step 1: Understand the definitions of homogeneous and heterogeneous mixtures. A homogeneous mixture has the same uniform appearance and composition throughout, meaning you cannot see different parts or phases with the naked eye.

Step 2: Recognize that a heterogeneous mixture consists of visibly different substances or phases, which means you can see distinct parts or layers within the mixture.

Step 3: Evaluate the given statements by comparing them to these definitions. For example, the statement that a homogeneous mixture is always a solid is incorrect because homogeneous mixtures can be gases, liquids, or solids.

Step 4: Consider the separation methods mentioned. Filtration is typically used to separate heterogeneous mixtures, not homogeneous ones, so that statement is incorrect.

Step 5: Note that mixtures, whether homogeneous or heterogeneous, can contain multiple elements or compounds, so the statement about the number of element types is not a defining difference.