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Chapter 10 Lesson 3
Definitions
Term | Definition |
---|---|
absolute age | numerical age of a rock or other object |
half-life | time required for half of the parent isotopes to decay into daughter isotopes |
isotopes | atoms of the same element that have different numbers of neutrons |
mineral | naturally occurring, inorganic solid with a definite chemical composition and an orderly arrangement of atoms |
radioactive decay | process by which an unstable element naturally changes into another stable element |