Every chemical and physical process involves an energy change where energy is either absorbed or released. Energy changes may be in the form of thermal energy (such as when compounds containing carbon and hydrogen are burned), electrical energy (as in electrochemical processes), radiant energy (as in the emission of light), or mechanical energy (as when fuel is combusted in a car engine to make it move.
By studying the energy changes that occur during chemical reactions that results in the transformation of matter are fundamental to understanding many of the essential chemical processes that chemists deal with at an industrial scale.
But how do chemists first learn about the relationship between chemical reactions and heat change?
The relationship between chemical reactions and heat changes are often referred to as thermochemistry, which is a small part of a larger study we know as thermodynamics.
This unit was designed to introduce and teach students the concept of energy changes during chemical reactions by first checking in on students’ prior knowledge and understanding between the concepts of ‘heat’ and ‘temperature’. Then slowly building on this foundational understanding to allow students to apply what they learn into solving more complex problems as they progress through this unit.
***** Included in this unit are
PowerPoint presentations for six lessons (83 slides)
Lesson 1 was designed to check students’ knowledge and understanding about the types of energy, and the difference between heat and temperature and introduce the concept of enthalpy. All six lessons are included as 1 presentation with start-stop indicators. Below are some of the slides from the PowerPoint presentation included with this package
A student workbook (36 pages to accompany the slide presentation)
The student booklet was designed to be an interactive accompaniment to the slide presentation. The six lessons are designed to not always follow the same teaching strategy. In some lessons students will begin with an engagement activity, in some the slide presentation is used as a short lecture to provide the knowledge needed to work through the activity or activities for the lesson. The lesson plan outline suggests how the slides and the students’ workbook may be used to successfully complete this unit.
Suggested Lesson Plans for the six lessons are included in the Preview you can download for free.