What This Document Is
This document outlines a remote laboratory exercise for Basic Chemistry (CHM 100) at Grand Rapids Community College, focused on the concepts of concentration and molarity. It utilizes interactive simulations from PhET Interactive Simulations to allow students to explore these principles in a virtual setting. The lab guides students through investigating the relationships between volume, solute amount, and solution concentration.
Why This Document Matters
This remote lab is designed for students enrolled in introductory chemistry courses who may not have access to a traditional wet lab environment. Understanding concentration and molarity is fundamental to many chemistry calculations and is crucial for success in further chemistry coursework and related scientific fields. This lab provides a hands-on, exploratory experience to solidify these concepts. It’s particularly valuable for students needing to visualize molecular interactions and concentration changes.
Common Limitations or Challenges
This document provides a framework for a virtual lab experience. It does *not* replace the experience of working with physical chemicals and lab equipment. Students will still need to apply the concepts learned in this lab to real-world problems and potentially in-person laboratory settings. The simulation, while helpful, is a simplified model of chemical behavior.
What This Document Provides
The full document includes:
* Learning goals related to describing relationships between volume, solute, and concentration.
* Links to the PhET Interactive Simulations for Concentration and Molarity.
* Review questions to assess understanding of mole calculations.
* Prompts for students to describe how different parameters (volume, solute amount, concentration) can be changed within the simulation.
* Space for students to record observations and explain the relationships between volume, evaporation, and molarity, supported by data from the simulation.
* Questions exploring the differences in concentration changes when adding solid versus liquid solutes.
* A summary section for students to list factors affecting concentration and their relationship (direct or indirect).
This preview *does not* include the answers to the review questions, the results of the simulation experiments, or a complete explanation of the concepts. It is designed to give you an overview of the lab’s scope and objectives.