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

4. BONUS: Lab Techniques and Procedures

Experimental Error

General Chemistry

4. BONUS: Lab Techniques and Procedures

Experimental Error

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Multiple Choice

Which of these describes a way to avoid researcher bias in an experiment?

Selecting participants based on personal preference

Using a double-blind study

Formulating a hypothesis after data collection

Ignoring conflicting data

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Verified step by step guidance

Understand the concept of researcher bias: Researcher bias occurs when the preferences or expectations of the researcher influence the outcome of an experiment. It can lead to skewed data and unreliable results.

Learn about double-blind studies: A double-blind study is a method used to prevent researcher bias. In this type of study, neither the participants nor the researchers know who is receiving a particular treatment. This helps ensure that the results are not influenced by expectations or preferences.

Evaluate the options given: Selecting participants based on personal preference can introduce bias, as the researcher may choose individuals who are more likely to produce desired results. Formulating a hypothesis after data collection can lead to bias, as the researcher may tailor the hypothesis to fit the data. Ignoring conflicting data can also introduce bias, as it may lead to overlooking important information.

Identify the correct method to avoid bias: Among the options provided, using a double-blind study is the most effective way to avoid researcher bias, as it minimizes the influence of expectations on the results.

Reflect on the importance of unbiased research: Unbiased research is crucial for obtaining reliable and valid results. By using methods like double-blind studies, researchers can ensure that their findings are based on objective data rather than personal preferences or expectations.