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).
Drive to action that (as opposed to intrinsic motivation) springs from outside influences instead of from one's own feelings. The children had an unjust teacher with many extrinsic motivations, such as good grades and gold stars for good behavior, and detention for being noisy, on the other hand. My friend had been dealing with a lot of extrinsic motivation because he had been dying to win the lottery and become rich.