Using Isotopes

The video tutorial explains the concept of isotopes, which are variants of elements with the same number of protons and electrons but different numbers of neutrons. It highlights the significance of isotopes in scientific research, particularly in isotopic labeling for tracking chemical reactions. The tutorial also delves into the medical applications of isotopes, using the example of radioactive iodine to diagnose thyroid issues. Overall, the video emphasizes the critical role isotopes play in both laboratory and medical settings.

Describe the process of using a radioactive isotope of iodine to identify thyroid issues.

What impact can a small change at the molecular level have, according to the text?