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

2. Atoms & Elements

Ions

General Chemistry

2. Atoms & Elements

Ions

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Multiple Choice

Which of the following compounds consists of ions?

H2O

CO2

CH4

NaCl

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Verified step by step guidance

Understand the difference between molecular compounds and ionic compounds. Molecular compounds are formed by atoms sharing electrons (covalent bonds), while ionic compounds are formed by the electrostatic attraction between positively and negatively charged ions.

Examine each compound given: H2O (water), CO2 (carbon dioxide), CH4 (methane), and NaCl (sodium chloride). Identify whether they are molecular or ionic based on their bonding.

H2O, CO2, and CH4 are all molecular compounds because they consist of atoms bonded covalently, sharing electrons rather than existing as separate ions.

NaCl is an ionic compound because it consists of sodium ions (Na⁺) and chloride ions (Cl⁻) held together by ionic bonds, meaning it is made up of ions.

Therefore, the compound that consists of ions is NaCl, as it is composed of discrete positive and negative ions, unlike the other molecular compounds listed.