An isotope of platinum is shown. Which of the following changes would result in the isotope osmium-186?
An isotope of platinum is shown. Which of the following changes would result in the isotope osmium-186?
An isotope of platinum is shown. Which of the following changes would result in the isotope osmium-186?
A scientist wants to date rocks that were formed over a billion years ago. Which of the following isotopes could be used to date the rocks accurately?
In the following nuclear reaction, what is the missing product and what type of reaction is this?
A sample initially has 10,000 atoms of carbon-14. After a certain amount of time, only 1,250 atoms of carbon-14 remain. How many half-lives have occurred?
The reaction below is an example of what type of process?
An atom contains 18 protons, 19 neutrons, and 18 electrons. What change would need to occur for the atom to become carbon-13?
In certain beta decay processes, a neutron in a parent nucleus decays into a proton, an electron, and an antineutrino. What is the result of this process in the daughter nucleus?
In the following radioactive decay process, why did the atomic number change while the number of nucleons did not?
Four mystery atoms (Q, R, S, and T) are shown below. Which of the four atoms are the same element, and how many neutrons do they have?
Uranium-238 (U-238) has a half-life of 4.47 × 10 years. Which of the following is a likely application of U-238?
Assume that a substance contains a parent isotope with a half-life of 600 years. The parent-daughter ratio is 6.25% parent isotope to 93.75% daughter isotope. Calculate the age of this substance.
Why are some of the rocks on the moon older than the oldest known rocks on Earth?
The most common absolute dating technique scientists use to study Earth’s history is called ________.
Why are radiometric dating techniques not commonly applied to sedimentary rocks?
Hydrogen has an atomic number of 1. How many neutrons and/or protons are in a hydrogen-3 isotope?
Why is an index fossil valuable if its absolute age is known?
In which way is carbon-14 similar to nitrogen-14?
Assume that a substance has 32 atoms of parent isotope at the end of its third half-life. Predict how many atoms of that isotope the substance would have at the end of its fifth half-life.