In this simulation, you will investigate the radioactive decay and the concept o
ID: 1060700 • Letter: I
Question
In this simulation, you will investigate the radioactive decay and the concept of half-life. Procedure: Go back to the Chapter 12 Assignments in the Assignment Dropbox > Chapter 12 Assignment Drop Box(s)> Radioactive Dating Game Simulation. Scroll down to the Radioactive Dating Game Simulation Link and click on the link. If you are using the IE explorer browser, the click on Run and the simulation will start. If you are using Chrome, Safari, or Firefox, you may have to download the file first. You win need to download Java before the simulation will run. Often your computer already has Java loaded, but if it won't run, it is usually because you have either an old version of lava running or lava Is not loaded at all. To check on this, Google Java download and follow the instructions there. If you are unrig the IE. explorer browser, the click on Run and the simulation will start. If you are using Chrome. Safari, or Firefox. you may have to download the file first. Click on 'Run Now ' and when the simulation opens click on the 'Single Atom' Tab. Some handy vocabulary for you to define: (use your notes. your book or the internet to define) Neutron ________________ Isotope ________________ Radiocarbon Dating ___________________ Half-Life ______________________ Decay (as used in half-life)___________________ Carbon-14..... What does the "14" represent?_____________________ Procedure; PhET rightarrow Play with the Sims rightarrow Chemistry rightarrow Radioactive Dating Game Take some time and play with the simulation. Those atoms arc radioactive! How cool is that? How many protons does Carbon-14 have? How many neutrons does Carbon-14 have? Add a Carbon-M atom to the play area. What happens to that Carbon-14 atom?______________________ Do all Carbon-14's decay at the same time?_______________ Add 50 Carbon-14s. (click Add M five times) What happens?Explanation / Answer
Neutron : a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
Isotopes are variants of a particular chemical element which differ in neutron number. All isotopes of a given element have the same number of protons in each atom.
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon a radioactive isotope of carbon.
Half Life : the time taken for the radioactivity of a specified isotope to fall to half its original value.
Radioactive decay (also known as nuclear decay or radioactivity) is the process by which the nucleus of an unstable atom loses energy by emitting radiation, including alpha particles, beta particles, gamma rays, and conversion electrons.
1. 14 in Carbon-14 represents the number of protons and neutrons in the isotope of the carbon atom.
2. Carbon 12 has 6 protons and 6 neutrons. Isotopes has same number of protons but differ by number of neutrons.
Carbon 14 has 6 protons.
3. Atomic number = number of protons + number of neutrons
14 = 6 + Number of neutrons
Number of neutrons = 8.
4. The carbon 14 atom starts to decay.
5. They breakdown randomly because of which single atom cannot be timed.
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