10: Chemical Reactions
- Page ID
- 409065
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We first introduced the idea of a chemical change in a previous chapter. This idea can also be referred to as a chemical reaction. We use chemical equations to keep track of these chemical changes. In the first 3 sections of this chapter we introduce ideas about chemical equations that will be important to understand in later chapters. In section 5.4 and 5.5 we introduce ideas related to categorizing and predicting reactions. Categorizing and predicting reactions will both show up in later chapters. This is your first glimpse of something that will continue to be important going forward.
- 10.4: Types of Reactions
- There are several ways to categorize chemical reactions, more than can possibly be covered in a single Chemistry textbook. This textbook will categorize reactions in a few places, and this is the first place where we will see it.
- 10.5: Predicting Reactions - Single and Double Displacement Reactions
- A single-replacement reaction replaces one element for another in a compound. The periodic table or an activity series can help predict whether single-replacement reactions occur. A double-replacement reaction exchanges the cations (or the anions) of two ionic compounds. A precipitation reaction is a double-replacement reaction in which one product is a solid precipitate. Solubility rules are used to predict whether some double-replacement reactions will occur.
- 10.6: Writing Chemical Equations for Reactions in Solution- Complete Chemical, Complete Ionic, and Net Ionic Equations
- Precipitation is a process in which a solute separates from a supersaturated solution. In a chemical laboratory, precipitation usually refers to a solid crystallizing from a liquid solution, but in weather reports it applies to liquid or solid water separating from supersaturated air.
- 10.7: Oxidation and Reduction- Some Definitions
- "Redox" is short for "oxidation and reduction", two complimentary types of chemical reactions. The term oxidation originally referred to substances combining with oxygen, as happens when an iron bar rusts or a campfire log burns. We often refer to these two examples as corrosion and combustion. Reduction originally referred to the process of converting metal ores to pure metals, a process that is accompanied by a reduction in the mass of the ore.
- 10.E: Chemical Reactions (Exercises)
- The following questions are related to the material covered in this chapter.