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 statements is true about all alloys?

All alloys contain only metallic elements.

All alloys are compounds formed by chemical reactions between metals.

All alloys are homogeneous mixtures of two or more elements.

All alloys have a fixed composition and definite chemical formula.

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Verified step by step guidance

Step 1: Understand the definition of an alloy. An alloy is a mixture composed primarily of metallic elements, but it can also contain non-metallic elements. It is not necessarily a compound formed by chemical reactions.

Step 2: Recognize that alloys are generally homogeneous mixtures, meaning their composition is uniform throughout the sample, but they are not compounds with fixed chemical formulas.

Step 3: Analyze the given statements: (a) 'All alloys contain only metallic elements' is false because some alloys include non-metallic elements (e.g., carbon in steel).

Step 4: The statement 'All alloys are compounds formed by chemical reactions between metals' is incorrect because alloys are mixtures, not compounds formed by chemical bonding.

Step 5: The statement 'All alloys have a fixed composition and definite chemical formula' is false because alloys can have variable compositions and do not have fixed formulas like compounds do. Therefore, the true statement is that all alloys are homogeneous mixtures of two or more elements.