Answered

Quiz
Active
12345 6 7 8
Which definition describes a half-life?
10
The time required for half of a radioactive sample to decay.
The time required for half of a radioactive sample to become unstable.
The time required for all of a radioactive sample to change because of heat.
The time required for all of a sample to break down due to pressure change.
TIME REMAINING
16:32:44
Mark this and return
Save and Exit
Submit



Answer :

GinnyAnswer
The correct definition that describes a half-life is: 1. The time required for half of a radioactive sample to decay. In the context of radioactive decay, the half-life of a substance refers to the time it takes for half of the radioactive atoms in a sample to undergo radioactive decay. This means that after one half-life, half of the original radioactive atoms have decayed into stable atoms, while the other half remains radioactive. The concept of half-life is crucial in understanding the rate of decay of radioactive substances and is used in various scientific fields such as geology, archeology, and medicine.

Other Questions