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

Laboratory Materials

General Chemistry

4. BONUS: Lab Techniques and Procedures

Laboratory Materials

Previous problemNext problem

Struggling with General Chemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Why is it necessary to wash the plate after removing reagents from the wells in a laboratory experiment?

To enhance the color intensity of the reagents

To prevent contamination of future experiments

To increase the volume of the remaining reagents

To reduce the evaporation rate of the reagents

Previous problemNext problem

Verified step by step guidance

Understand the purpose of washing the plate: In laboratory experiments, especially those involving multiple reagents, it is crucial to maintain the integrity of the experiment by preventing cross-contamination between different wells or samples.

Consider the consequences of not washing: If the plate is not washed after removing reagents, residual chemicals can remain in the wells. These residues can interfere with subsequent experiments by introducing unwanted reactions or skewing results.

Recognize the importance of accuracy: Washing the plate ensures that each experiment starts with a clean slate, allowing for accurate and reliable results. This is essential for reproducibility and validity in scientific research.

Acknowledge the role of washing in maintaining equipment: Regular washing of laboratory equipment, including plates, helps to maintain their condition and prolong their usability, ensuring that they function correctly for future experiments.

Conclude with the primary reason: The main reason for washing the plate after removing reagents is to prevent contamination of future experiments, ensuring that each experiment is conducted under controlled and uncontaminated conditions.