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

Chemical Properties

General Chemistry

1. Intro to General Chemistry

Chemical Properties

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Multiple Choice

Which of the following is not a correctly matched pair of ionic compound name and formula?

Sodium chloride - NaCl

Magnesium nitrate - MgNO3

Calcium oxide - CaO

Potassium sulfate - K2SO4

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Verified step by step guidance

Step 1: Understand the problem. We need to identify which pair of ionic compound name and formula is incorrectly matched.

Step 2: Review the given pairs. We have: Sodium chloride - NaCl, Magnesium nitrate - MgNO3, Calcium oxide - CaO, Potassium sulfate - K2SO4.

Step 3: Recall the rules for writing chemical formulas for ionic compounds. The formula should reflect the charges of the ions involved, ensuring the compound is electrically neutral.

Step 4: Analyze each pair. Sodium chloride (NaCl) is correct because sodium (Na) has a +1 charge and chloride (Cl) has a -1 charge, balancing each other. Calcium oxide (CaO) is correct because calcium (Ca) has a +2 charge and oxide (O) has a -2 charge, balancing each other. Potassium sulfate (K2SO4) is correct because two potassium ions (each with a +1 charge) balance the -2 charge of the sulfate ion (SO4).

Step 5: Check the pair Magnesium nitrate - MgNO3. Magnesium (Mg) has a +2 charge, while the nitrate ion (NO3) has a -1 charge. To balance the charges, the correct formula should be Mg(NO3)2, not MgNO3. Therefore, this pair is incorrectly matched.