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

According to the Law of Conservation of Mass, which of the following statements is true during a chemical reaction?

The total mass of the products is greater than the total mass of the reactants.

Mass is lost as energy during the reaction.

The total mass of the reactants equals the total mass of the products.

The total mass of the reactants is less than the total mass of the products.

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Verified step by step guidance

Understand the Law of Conservation of Mass: This law states that mass is neither created nor destroyed in a chemical reaction. Therefore, the mass of the reactants must equal the mass of the products.

Analyze the given statements: We need to determine which statement aligns with the Law of Conservation of Mass.

Evaluate the first statement: 'The total mass of the products is greater than the total mass of the reactants.' This contradicts the law, as it suggests mass is created.

Evaluate the second statement: 'Mass is lost as energy during the reaction.' This implies mass is destroyed, which also contradicts the law.

Evaluate the third statement: 'The total mass of the reactants equals the total mass of the products.' This is consistent with the Law of Conservation of Mass, making it the correct statement.