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 correctly describes both elements and compounds, and distinguishes between them?

Both elements and compounds are pure substances, but elements consist of only one type of atom while compounds consist of two or more types of atoms chemically bonded.

Elements and compounds are both made of molecules, but only compounds are pure substances.

Elements are pure substances made of molecules, while compounds are mixtures of different elements.

Both elements and compounds are mixtures, but elements can be separated by physical means while compounds cannot.

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Verified step by step guidance

Step 1: Understand the definitions of elements and compounds. An element is a pure substance consisting of only one type of atom, while a compound is a pure substance made up of two or more different types of atoms chemically bonded together.

Step 2: Recognize that both elements and compounds are classified as pure substances because they have a fixed composition and distinct chemical properties.

Step 3: Note that elements cannot be broken down into simpler substances by chemical means, whereas compounds can be decomposed into their constituent elements through chemical reactions.

Step 4: Understand that elements may exist as individual atoms or molecules (such as O2), but compounds always consist of molecules or formula units containing different atoms bonded together.

Step 5: Use these distinctions to evaluate the given statements and identify the one that correctly describes both elements and compounds and distinguishes between them based on their atomic composition and bonding.