Benchmark 11C
Common Themes: Constancy and Change
Grades 9-12, page 275

Along with the theory of atoms, the concept of the conservation of matter led to revolutionary advances in chemical science. The concept of conservation of energy is at the heart of advances in fields as diverse as the study of nuclear particles and the study of the origin of the universe.

See the general discussion in Unifying Concepts and Processes: Constancy, change, and measurement