What type of reaction do Carbon -14 and Uranium- 238 undergo? Explain how you figured this out and write the reaction for each.
Carbon-14 and Uranium-238 undergo radioactive decay reactions. This can be determined by looking at the atomic numbers of the two elements - Carbon has an atomic number of 6 and Uranium has an atomic number of 92. Both of these isotopes are unstable and undergo radioactive decay to form more stable isotopes.
The reaction for Carbon-14 decay is:
C-14 -> N-14 + e- + antineutrino
The reaction for Uranium-238 decay is:
U-238 -> Th-234 + He-4