Chapter 13 Introduction
Biologists define toxins as harmful substances that come from living organisms, like these fly agaric mushrooms.
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CHAPTER 13
Toxic Changes
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In this chapter, you will study
how to write, balance, and interpret chemical equations
definitions of chemical and physical change
how to classify chemical reactions
what happens to mass when a chemical change occurs
Chemical changes are necessary for life. However, some substances interact with the body in ways that have unhealthy effects. To monitor and understand toxic interactions, it is necessary to use chemical equations to track changes in matter.