2. Lesson 2: Breaking Ionic Bonds Lab Activity

Carole Namowicz, Shruti Researcher
Chemistry
100 min
High School
v5
Make a Copy

Overview

Students will dissolve five different ionic compounds in water to observe and measure the temperature difference before and after dissolving. Only endothermically dissolving ionic compounds are utilized here as the intention is for students to associate a compound’s bonds breaking with a temperature decrease as energy is required to break bonds. Kinetic energy from the water (the surroundings) is transferred to break bonds in the chemical system.

Students will use a spreadsheet in CODAP to systematically convert between various units. They will also observe how changing variables such as the amount of ionic compound used or the amount of water the ionic compound is dissolved in affects the temperature change.

Jump to Teacher Notes

Underlying Pages

Standards

Next Generation Science Standards
  •   Physical Science
    • [HS-PS1-4] Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
    • [HS-PS3-2] Develop and use models to illustrate that energy at the macroscopic scale can be accounted for as a combination of energy associated with the motions of particles (objects) and energy associated with the relative positions of particles (objects)
Computational Thinking in STEM
  •   Data Practices
    • Collecting Data
    • Creating Data
    • Manipulating Data
    • Visualizing Data
    • Analyzing Data
  •   Modeling and Simulation Practices
    • Assessing Computational Models
    • Using Computational Models to Understand a Concept
  •   Systems Thinking Practices
    • Communicating Information about a System
    • Investigating a Complex System as a Whole
    • Thinking in Levels
    • Understanding the Relationships within a System
Make a Copy