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Related Concept Videos

Problem-Solving01:29

Problem-Solving

103
Effective problem-solving consists of two steps: 1. identifying the problem and 2. selecting the appropriate problem-solving strategy (i.e., a plan of action used to find a solution). Humans use four problem-solving strategies:
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The Small x Assumption02:20

The Small x Assumption

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If a reaction has a small equilibrium constant, the equilibrium position favors the reactants. In such reactions, a negligible change in concentration may occur if the initial concentrations of reactants are high and the Kc value is small. In such circumstances, the equilibrium concentration is approximately equal to its initial concentration.  This estimation can be used to simplify the equilibrium calculations by assuming that some equilibrium concentrations are equal to the initial...
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SN2 Reaction: Mechanism02:27

SN2 Reaction: Mechanism

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The kinetic studies of SN2 reactions suggest an essential feature of its mechanism: it is a single-step process without intermediates. Here, both the nucleophile and the substrate participate in the rate-determining step.
The presence of the more electronegative halogen in the substrate creates a polarized carbon-halide bond. The halide pulls the electron cloud generating an electrophilic center at the carbon atom. Thus, the carbon atom carries a partial positive charge while the halide has a...
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Predicting Reaction Outcomes02:24

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Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
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Calculating Equilibrium Concentrations02:05

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Being able to calculate equilibrium concentrations is essential to many areas of science and technology—for example, in the formulation and dosing of pharmaceutical products. After a drug is ingested or injected, it is typically involved in several chemical equilibria that affect its ultimate concentration in the body system of interest. Knowledge of the quantitative aspects of these equilibria is required to compute a dosage amount that will solicit the desired therapeutic effect.
A more...
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Leveling Effect and Non-Aqueous Acid-Base Solutions02:11

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This lesson defines the leveling effect in acidic and basic solutions and its role in aqueous and non-aqueous solutions. It is essential to understand the competing nature of various species in a chemical system.
The Leveling Effect of a Solvent
A generic acid (HA) reacts with the generic base (B-) to yield the corresponding conjugate base (A-) and conjugate acid (HB):
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Updated: May 17, 2025

Problem-Solving Before Instruction PS-I: A Protocol for Assessment and Intervention in Students with Different Abilities
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Problem Solving Videos for General Chemistry Review: Students' Perceptions and Use Patterns.

Michelle Richards-Babb1, Reagan Curtis2, Valerie J Smith1

  • 1C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States.

Journal of Chemical Education
|March 31, 2025
PubMed
Summary
This summary is machine-generated.

Problem-solving videos (PSVs) are highly valued by general chemistry students for exam preparation, offering superior utility compared to traditional review sessions. Students appreciate the step-by-step explanations and self-paced learning features of these videos.

Keywords:
Chemical Education ResearchEnrichment/Review MaterialsFirst-Year Undergraduate/GeneralMultimedia-Based Learning

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Area of Science:

  • Chemistry Education
  • Educational Technology

Background:

  • Traditional general chemistry courses often rely on lectures and review sessions.
  • Student engagement and effective learning strategies are crucial for success in chemistry.
  • Problem-solving videos (PSVs) offer a potential alternative or supplement to existing instructional methods.

Purpose of the Study:

  • To evaluate the effectiveness of problem-solving videos (PSVs) as a replacement for general chemistry exam review sessions.
  • To understand student perceptions of PSVs' utility in supporting chemistry content learning.
  • To investigate how students utilize PSVs to enhance their learning process.

Main Methods:

  • Student surveys assessing the perceived usefulness of various course components, including PSVs.
  • Analysis of student viewing patterns for PSVs.
  • Correlation of PSV view counts with exam schedules using YouTube analytics.

Main Results:

  • Students ranked PSVs as more useful than textbooks and traditional exam review sessions.
  • PSVs were frequently viewed, often multiple times, primarily for exam preparation.
  • Key beneficial features identified by students include step-by-step explanations and control over the learning pace.
  • YouTube data confirmed peak PSV viewership occurred just before and during exams.

Conclusions:

  • PSVs are perceived by students as a highly effective tool for general chemistry learning and exam preparation.
  • Integrating PSVs can optimize in-class time for higher-order thinking activities like active learning and group work.
  • The findings support the strategic implementation of PSVs to enhance student learning outcomes in chemistry.