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).
Extrinsic motivation refers to taking some action in order to obtain a reward or outcome. Instead of doing something because it is fun, people who are extrinsically motivated act based on what they receive as a result. They are not concerned with the action itself; they are only concerned with the resulting rewards. While intrinsic motivation is based off internal factors, extrinsic motivation is dependent upon external factors and outcomes. Different things can serve as sources of extrinsic motivation.