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1/8 = (1/2)3 which is in the form (1/2)n where n is the number of half lives undergone.

Therefore the substance has passed three half lives

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How many half-lives have passed in a rock containing one eighth of the original radioactive material and seven eighths of the daughter product?

3 half-lives


Describe the concept of using radioactive elements to establish an age for a fossil Be sure to include how the parent and daughter elements are used in the determination of age?

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To calculate the number of daughter atoms present after a certain amount of time in a radioactive decay process, you would use the formula: N = N0 * (1/2)^(t/T), where N0 is the initial number of parent atoms, N is the number of daughter atoms, t is the elapsed time, and T is the half-life of the radioactive isotope. Simply plug in the values to determine the number of daughter atoms after the given time.


To use radioactive dating for a substance you must know the substances?

decay rate and initial amount of parent and daughter isotopes. By measuring the current ratio of parent to daughter isotopes in the substance, you can calculate how much time has passed since the radioactive decay began.


What is the stable isotope that is formed by the breakdown of a radioactive isotope?

The stable isotope formed by the breakdown of a radioactive isotope is called a daughter isotope. This process is known as radioactive decay, where a radioactive isotope transforms into a stable daughter isotope through the emission of particles or energy.


What our daughter isotopes?

"Daughter isotopes" are called the decay products of an radioactive isotope.


What is the bullet in a fission reaction?

An electron is fired into the reactor core containing the radioactive material, usually uranium, and as it hits the radioactive nucleus the uranium atom breaks down forming two daughter nuclei and emitting another electron (beta radiation particle) which continues as a chain reaction.


What property of radioactive elements make them useful for determining absolute age?

The property of radioactive decay is what makes radioactive elements useful for determining absolute age. By measuring the amount of parent and daughter isotopes in a sample, scientists can calculate the age of the material based on the known half-life of the radioactive element.


What do scientists call the time it takes for half of the radioactive atoms to change into daughter elements?

Scientists refer to the time it takes for half of the radioactive atoms to change into daughter elements as the half-life of the radioactive substance.


Do the numbers of radioactive and daughter atoms change at the same rate throughtout the simulation?

The numbers of radioactive and daughter atoms may or may not change at the same rate throughout simulation when compared to each other. Atoms generally start out at a higher rate of speed, and decrease to a lower one.


What is the stable isotope produced by radioactive decay is called?

The stable isotope produced by radioactive decay is called a daughter isotope.