9-12

E4: Describe an application of the law of Conservation of Matter.

Curriculum Organizing Questions	What is the law of conservation of matter? How does this situation illustrate the law of conservation of matter? What examples in your life of the law of conservation can you describe?
Elaboration	Students should be able to describe the limits of the system within which their examples occur. Students may benefit by looking at the historical development of this law, including work by Boyle, van Helmont, and Lavoisier.
Specific Ideas
Developmental & Instructional Implications	Complex reactions, especially those where gas is absorbed or released, are more difficult to grasp as instances of weight conservation. Atlas p. 56.
Examples

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