Question

explain the concept of half-life.
match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence i
half, the temperature, part, to deactivate, to decay, deactivation rates, quarter, decay rates, increase the mass, mass increasing rates, third, the time
the half-life of a radioactive nuclide is blank it takes for blank of the original parent nuclides in a radioactive sample blank. the half-life can be used to determine radioactive blank.

Explanation:

To solve this, we recall the definition of half - life. The half - life of a radioactive nuclide is the time it takes for half of the original parent nuclides in a radioactive sample to decay. And half - life is used to determine radioactive decay rates.

1. The first blank in the sentence "The half - life of a radioactive nuclide is __ it takes for of the original parent nuclides in a radioactive sample . The half - life can be used to determine radioactive __" should be "the time" because half - life is a time measurement.
2. The second blank should be "half" as per the definition of half - life (the time for half of the substance to decay).
3. The third blank should be "to decay" because radioactive nuclides undergo decay (not deactivation, and the other options like increasing mass don't make sense here).
4. The fourth blank should be "decay rates" as half - life is related to how fast the radioactive substance decays.

Answer:

The completed sentence is: "The half - life of a radioactive nuclide is the time it takes for half of the original parent nuclides in a radioactive sample to decay. The half - life can be used to determine radioactive decay rates."
So the matches are:
First blank: the time
Second blank: half
Third blank: to decay
Fourth blank: decay rates