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 compound and an element?

A compound contains only one type of atom, while an element contains two or more types of atoms.

A compound can be separated by physical means, while an element cannot be separated by any means.

An element is always found in nature as a molecule, while a compound is always found as individual atoms.

A compound consists of two or more different elements chemically combined, while an element is a pure substance made of only one type of atom.

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Verified step by step guidance

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.

Understand the definition of a compound: A compound is a substance formed when two or more different elements are chemically combined in fixed proportions. Compounds have properties different from the individual elements that compose them.

Recognize that elements can exist as single atoms or molecules made of the same type of atom (e.g., O2 is an elemental molecule), but they always contain only one kind of atom.

Note that compounds can be broken down into their constituent elements by chemical methods, but not by physical means, because the elements are chemically bonded.

Compare the statements given and identify that the correct description is: 'A compound consists of two or more different elements chemically combined, while an element is a pure substance made of only one type of atom.'