Radioactive dating game lab answers
To achieve stability, these atoms must make adjustments, particularly in their nuclei.In some cases, the isotopes eject particles, primarily neutrons and protons.However, while the number of neutrons varies, every atom of any chemical element always has the same number of protons and electrons.So, for example, every carbon atom contains six protons and six electrons, but the number of neutrons in each nucleus can be six, seven, or even eight.However, it is the interpretation of these chemical analyses of the parent and daughter isotopes that raises potential problems with these radioactive dating methods.To understand how geologists “read” the age of a rock from these chemical analyses using the radioactive “clock,” let’s use the analogy of an hourglass “clock” (figure 2).Examples are granites (formed by cooling under the ground) and basalts (formed by cooling of lava flows at the earth’s surface).
Some isotopes of some elements are radioactive; that is, they are unstable because their nuclei are too large.
Each chemical element, such as carbon and oxygen, consists of atoms unique to it.
Each atom is understood to be made up of three basic parts.
Therefore, carbon has three isotopes, which are specified as carbon-12, carbon-13 and carbon-14 (figure 1). Comparison of stable and unstable atoms of the element carbon.
They have six protons in their nuclei and six electrons orbiting their nuclei, which gives carbon its chemical properties.
These parent radioisotopes change into daughter lead-206, lead-207, argon-40, strontium-87, and neodymium-143 isotopes, respectively.