Lesson 3: Precipitation Reactions. A precipitation reaction is a reaction in which soluble ions in separate solutions are mixed together to form an insoluble compound that settles out of solution as a solid.That insoluble compound is called a precipitate.Solubility Rules for Ionic Compounds.esson 3: Precipitation Reactions. A precipitation reaction is a reaction in which soluble ions in separate solutions are mixed together to form an insoluble compound that settles out of solution as a solid. That insoluble compound is called a precipitate. Solubility Rules for Ionic Compounds.
The finding that extrinsic rewards can undermine intrinsic motivation has been highly controversial since it first appeared (Deci, 1971).
Video: Intrinsic and Extrinsic Motivation in Education: Definition & Examples. Intrinsic and extrinsic are the two types of motivation. Learn more about intrinsic and extrinsic motivation from definitions and examples, then test your knowledge with a quiz. Psychology 104: Social Psychology / Psychology Courses.