Which is the BEST definition of Half-Life? a 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. b 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. c 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 time it takes for half of the initial quantity of that substance or element to decay or transform into another substance.
The BEST definition of half-life is:
b) 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.
The BEST definition of Half-Life is option b: "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."
To understand why this is the best definition, let's break it down:
1. "The amount of time": This phrase tells us that we are measuring the duration or length of time.
2. "Half of the initial quantity": This part refers to the starting amount of the substance or element we are observing. It means that we are considering the original quantity or concentration.
3. "Decay or transform into another substance": This indicates that the substance or element is undergoing a process of decay (breaking down) or transformation (changing into another substance). It suggests that there is a change happening within the substance or element.
By combining these three components, option b provides a clear and concise definition of half-life, allowing us to understand that it measures the time it takes for half of the initial quantity of a substance or element to decay or transform into another substance.