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).
Motivation in children predicts motivation later in life, and the stability of this relationship. strengthens with age. Traditionally, educators consider intrinsic motivation to be more desirable. and to result in better learning outcomes than extrinsic motivation. In general, children appear to. enter school with high levels of intrinsic motivation, although motivation tends to decline as. children progress through school.