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

3. Chemical Reactions

Naming Ionic Compounds

General Chemistry

3. Chemical Reactions

Naming Ionic Compounds

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Multiple Choice

Which of the following is the correct chemical formula for sodium chloride?

Na_2Cl

NaCl_2

Na_2Cl_2

NaCl

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Verified step by step guidance

Step 1: Identify the elements involved. Sodium chloride is composed of sodium (Na) and chlorine (Cl).

Step 2: Determine the charges of the ions formed by each element. Sodium typically forms a +1 ion (Na\^{+}), and chlorine typically forms a -1 ion (Cl\^{-}).

Step 3: Use the charges to find the simplest ratio of ions that results in a neutral compound. Since both ions have charges of equal magnitude but opposite sign, they combine in a 1:1 ratio.

Step 4: Write the chemical formula by placing the symbols of the elements side by side, with subscripts indicating the number of atoms. Because the ratio is 1:1, no subscripts are needed beyond the element symbols themselves, resulting in NaCl.

Step 5: Verify that the formula is electrically neutral by confirming that the total positive charge balances the total negative charge.