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 elements and compounds?

Elements always exist as molecules, while compounds exist only as ions.

Elements consist of only one type of atom, while compounds are made of two or more different types of atoms chemically bonded together.

Elements can be separated into simpler substances by chemical means, but compounds cannot.

Compounds are pure substances, but elements are mixtures of atoms.

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Verified step by step guidance

Step 1: Understand the definition of an element. An element is a pure substance that consists of only one type of atom. It cannot be broken down into simpler substances by chemical means.

Step 2: Understand the definition of a compound. A compound is a pure substance formed when two or more different types of atoms are chemically bonded together in fixed proportions.

Step 3: Compare elements and compounds based on their atomic composition. Elements have only one kind of atom, while compounds have multiple kinds of atoms bonded together.

Step 4: Recognize that elements can exist as single atoms or molecules (like O\_2), but this does not define the difference from compounds. The key difference is the variety and bonding of atoms.

Step 5: Evaluate the given options by matching them to these definitions, identifying that the correct description is that elements consist of only one type of atom, while compounds are made of two or more different types of atoms chemically bonded together.