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Students begin the activity by brainstorming observable changes that indicate a chemical change has occurred. They then mix calcium chloride with water and measure the temperature change during the reaction. Next, they add baking soda to the solution and measure the temperature change. Throughout, students are prompted to record observations that indicate a chemical reaction has taken place. They ...

This is the second chapter in the American Chemical Society (ACS) program Middle School Chemistry. This chapter contains five lessons or activities: Heat, Temperature, and Conduction Changing State—Evaporation Changing State—Condensation Changing State—Freezing Changing State—Melting Each lesson is outlined in a detailed lesson plan that follows the BSCS 5E instructional m ...

This activity blends a hands-on investigation with a computer simulation, as students use probeware to observe and graph the changing temperature of a melting ice cube. In the first step, learners use a sensor to monitor temperature as an ice cube melts in a bowl of room temperature water. Next, temperature is monitored as a second ice cube is placed in a solution of salt water mixed at the conce ...

Students do an activity in which heat is transferred from hot water to cold metal washers, and then from hot washers to cold water. They view an animation to help them understand what's going on at the molecular level, and then they draw their own representation of the process of conduction.

This simulation allows the user to choose one of four substances (A, Ne, O2, H2O), vary the temperature of the container and observe the behavior of the particles of the substance providing a straightforward means to observe the relationship specified in the performance expectation and disciplinary core idea. Be sure to use the simulation labeled “Basics.” There are two tabs at the top ...

This 5-minute YouTube video, hosted by physicist Derek Muller, aims to debunk specific misconceptions held by most people about heat and temperature. Dr. Muller uses an inquiry-based approach to explore the scientific meaning of heat transfer by examining whether our touch receptors are reliable gauges of heat and temperature. The opening question: “Which is hotter, a metal hard drive or a ...