Yes because they look at the ammount of radioactive decay and they can determine the age of the granite. As the radioactive isotope decreases the non radioactive element increases. The less radioactive decay ammount there is the older it is.
with C14 atom
In chemistry, C14 refers to Carbon-14, which is a radioactive isotope of carbon. It is used in radiocarbon dating to determine the age of organic materials. Carbon-14 is formed in the atmosphere through the interaction of cosmic rays with nitrogen.
The atomic mass number of that isotope. So C14 has a molecular mass of 14 grams/mole U238, 238 grams/mole
C14 (carbon) isotope (mass number 14 that is, in stead of 12) if it is of organic origin, eg. wood, coal, mummy's clothe
Carbon 14 is absorbed by living organisms. When they die, they stop absorbing carbon 14 and the isotope then decays. Form the time of death of the organism, the quantity of C14, as a proportion of the total carbon in the organism declines and, measuring that decrease allows the age (or time of death) of the organism to be determined.
with C14 atom
The number of neutrons (and the fact that C14 is radioactive).
In chemistry, C14 refers to Carbon-14, which is a radioactive isotope of carbon. It is used in radiocarbon dating to determine the age of organic materials. Carbon-14 is formed in the atmosphere through the interaction of cosmic rays with nitrogen.
The atomic mass number of that isotope. So C14 has a molecular mass of 14 grams/mole U238, 238 grams/mole
carbon exists as 3 naturally isotopes c12 c13 c14 as he number of neutrons increase in the isotope the nuclear charge
It is because living organisms absorb C14 from their environment. After death, they are no longer capable of absorbing any more C14. So, at the time of death, the C14 : C12 ratio is fixed. C14 undergoes radioactive decay (into C12) so the C14 : C12 ratio declines and that can be used as a measure of the time since death.
C14 (carbon) isotope (mass number 14 that is, in stead of 12) if it is of organic origin, eg. wood, coal, mummy's clothe
Carbon 14 is absorbed by living organisms. When they die, they stop absorbing carbon 14 and the isotope then decays. Form the time of death of the organism, the quantity of C14, as a proportion of the total carbon in the organism declines and, measuring that decrease allows the age (or time of death) of the organism to be determined.
C14 - 2013 was released on: USA: 30 October 2013 (limited)
The symbol for the radioactive isotope Carbon-14 is ^14C. The superscript 14 indicates the mass number of the isotope, which is the sum of protons and neutrons in the nucleus. The letter C represents the chemical element carbon.
Nucleus of the standard isotope of carbon atom has 6 protons and 6 neutrons (carbon 12). Other Isotopes of carbon atoms are also possible, such as C14, which has 8 neutrons, and decays by beta particle emission into nitrogen.
It is not possible to carbon date rocks. Carbon 14 dating is based on the absorption of atmospheric carbon by livingthings. When the thing dies it no longer takes in carbon from the atmosphere through processes such as eating or respiration and levels of C14 in the body deplete due to the natural process of radioactive decay. By seeing how much C14 remains it is possible to see how long it has been since that animal died.However there are a range of other dating methods which can be used.