NY Chemistry Regents Exam January 2023

48. Given the equation representing a reaction:

This equation represents (1) sublimation

(2) condensation

(3) fission

(4) fusion

Solution: Sublimation is a phase change going from solid to gas phase. Condensation is a phase change going form gas to liquid. Fission is a nuclear reaction. In fission we see neutron on the left side. Fusion is a nuclear reaction with small nuclei coming together such as hydrogens coming together to form larger atoms. This reaction is fusion, choice 4