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to allow the correct amount of oxygen to enter and leave the substance
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What are atoms with the same number of protons and different numbers of neutrons called?
Isotopes have the same number of protons but a different number of neutrons. Different isotopes of a single element are on the same position on the periodic table of elements. The existence of isotopes was first suggested in 1913 by a radiochemist named Frederick Soddy.
What counts radioactive material?
We often use a Geiger counter to detect and count the decay of radioactive material.
What does carbordating mean?
Do you mean carbon dating? Carbon dating is a process that scientists use to try to ascertain the age of an item by analyzing the amount of a radioactive carbon isotope that is present in the item. Generally this is used to date biological items. Like, really old trees and stuff. The percent of the radioactive isotope in the specimen is accumulated to normal levels as the thing was alive, after it is dead it stops absorbing new carbon and thus by measuring the ratio of isotopes that are decaying we can determine the age of the item. (using the half-life of the radioactive isotope)
How might you use a radioactive isotope to find out whether the oxygen in carbon dioxide comes from sugar or oxygen gas?
Radiolabel the sugar oxygens, then carry out the reaction and see if the carbon dioxide that's released is radioactive or not. Alternatively, you could use radioactive oxygen gas.
Why do scientist use radioactive dating?
To figure out how old something is based how long it takes elements in the sample to decay.
What of the use of isotopes in archeology?
One would use radioactive isotopes as to measure decay rates in an ancient piece (e.g. rock) to estimate its age. e.g. carbon dating
Use the term radioactive decay in a sentence?
"The radioactive decay of certain unstable isotopes is used to calculate the age of objects."
Since radioactive isotopes decay at different rates how is radiocarbon dating of any value in determining how old a fossil is?
Radiocarbon dating is useful for determining the age of organic materials such as fossils because it measures the decay of carbon-14 isotopes. Carbon-14 has a half-life of about 5,730 years, making it suitable for dating organic remains up to around 50,000 years old. By comparing the ratio of carbon-14 to stable carbon isotopes in a sample, scientists can calculate its age.
Does carbon dating use nuclear fusion?
No, carbon dating does not use nuclear fusion. Carbon dating is a method used to determine the age of organic materials by measuring the remaining levels of a radioactive isotope called carbon-14. This process involves the decay of carbon-14, not nuclear fusion.
What are atoms with the same number of protons and different numbers of neutrons called?
Isotopes have the same number of protons but a different number of neutrons. Different isotopes of a single element are on the same position on the periodic table of elements. The existence of isotopes was first suggested in 1913 by a radiochemist named Frederick Soddy.
How do scientists use the halflife of radioactive isotopes to date rocks and fossils?
The basic idea is to compare the abundance of a naturally occurring radioactive isotope within a material to the abundance of its decay products; it is known how fast the radioactive isotope decays.
Are there any types of nuclear medicine that doesn't use radioactive isotopes?
All nuclear medicine techniques use radioactive isotopes.
What would you use to do absolute dating of a rock layer?
There are several ways to do absolute dating of a rock layer. One of these is to use the radioactive decay of the isotopes that are naturally found in rocks.
What is the process called when scientists use radioactive isotopes to calculate a fossils age?
Radioactive elements tend to degrade or give off radiation at a constant rate. That is an essential part of radioactive carbon dating. Uranium, for instance has a has half life of 5,400 years. Each 5,400 years, half of the uranium becomes inert lead. It is considered an accurate form of dating.
How radioactive are gamma rays?
They have a radiation weighting factor of 1. This is used in equivalent dose (H=DWr) As a use for comparison: - Alpha particles = 20 - Beta particles = 1 - Fast Neutrons = 10 - Slow Neutrons = 3
What is the similarity of radioactive isotope and radioactive dating?
Radioactive isotopes are used for radioactive dating. For example, you would use radioactive isotope Carbon-14 to date anything under 70,000 years that was once living. Radioactive isotopes decay from their parent isotope to daughter isotope at a constant rate (under any circumstances). The rate at which a parent isotope decays to its daughter isotope is considered one half life. Carbon-14 has a half life of 5730 years and its daughter isotope is Nitrogen-14. In order to determine how old something is you have to find out how much of the parent isotope is present in relation to the daughter.
Does all your energy come from the sun?
Most of the energy we use can be traced to the Sun in one way or another, but not all of it. Energy from nuclear sources does not come from the Sun. It comes from the heat produced as a result of decay of radioactive isotopes. While the Sun does create radioactive isotopes in its interior, that is not the source of the isotopes available to us on the Earth today. Our radioactive isotopes came from other stars that exploded billions of years ago, before the Earth and the Sun were formed.
