At a Glance

Discipline

  • Chemistry

Instructional Level

  • College & CEGEP
  • University

Course

  • General Chemistry

Tasks in Workflow

Social Plane(s)

  • Group
  • Whole Class

Type of Tasks

  • Collecting & seeking information
  • Discussing
  • Solving problems
  • Reviewing & assessing peers
  • Debating
  • Writing

Technical Details

Class size

  • Small (20-49)
  • Medium (50-99)

Time

Single class period (< 90 mins)

Overview

In this activity, students are presented with a case study in which the challenge is to identify the compound responsible for an explosion in a laboratory (and in doing so, identify the individual behind the explosion).

Working in pairs, students will determine molar masses, % mass composition, and empirical formulas for various compounds in order to eliminate all but one compound (and therefore suspect).

Students then vote on the guilty party. Groups that voted for different suspects join forces to collaborate and compare their work. In these larger groups, students discuss their reasoning before coming to a conclusion for a second ...

Read More +

In this activity, students are presented with a case study in which the challenge is to identify the compound responsible for an explosion in a laboratory (and in doing so, identify the individual behind the explosion).

Working in pairs, students will determine molar masses, % mass composition, and empirical formulas for various compounds in order to eliminate all but one compound (and therefore suspect).

Students then vote on the guilty party. Groups that voted for different suspects join forces to collaborate and compare their work. In these larger groups, students discuss their reasoning before coming to a conclusion for a second vote.

Read Less -

Instructional Objectives

To promote development of skills required to solve complex problems including the following: knowledge application, analysis and evaluation of solution. Students learn to identify substances based on clues such as molar mass.

Workflow & Materials

Activity Workflow

Explosives Detective

Download

Contributor's Notes

Adamo R. Petosa
Adamo R. Petosa

Dawson College, Montreal, QC

Benefits

Stay tuned.

Challenges

Stay tuned.

Tips

Stay tuned.

Applied Strategies

  1. 1
    Problem-Based Learning
  2. 2
    Case Studies
  3. 3
    Debates

Feedback

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