Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 36m
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

4. BONUS: Lab Techniques and Procedures

Experimental Error

General Chemistry

4. BONUS: Lab Techniques and Procedures

Experimental Error

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Multiple Choice

In a controlled experiment, how many independent variables can be tested at one time?

Three

One

Two

Four

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Verified step by step guidance

Understand the definition of an independent variable: An independent variable is a factor that is changed or controlled in a scientific experiment to test the effects on the dependent variable.

Recognize the purpose of a controlled experiment: A controlled experiment is designed to test the effect of a single independent variable while keeping all other variables constant.

Identify the reason for testing only one independent variable: Testing only one independent variable at a time ensures that any observed changes in the dependent variable can be attributed solely to the changes in the independent variable.

Consider the implications of testing multiple independent variables: If more than one independent variable is tested simultaneously, it becomes difficult to determine which variable is responsible for any observed changes in the dependent variable.

Conclude that in a controlled experiment, only one independent variable should be tested at a time to maintain the integrity and clarity of the results.