Question

Which is the BEST definition of Half-Life? a The half-life of a substance or element is the amount of energy it takes for all of the initial quantity of that substance or element to decay or transform into another substance. b The half-life of a substance or element is the amount of matter it takes for all of the quantity of that substance or element to decay or transform into another substance. c The half-life of a substance or element is the amount of time it takes for half of the initial quantity of that substance or element to decay or transform into another substance.

Answer 1

c The half-life of a substance or element is the amount of time it takes for half of the initial quantity of that substance or element to decay or transform into another substance.