Answer :
Final answer:
The freezing of nitrogen at -210 degrees Celsius is a physical change, not a chemical change. During this process, nitrogen changes its state from gas to solid while maintaining the same molecular structure.
Explanation:
When nitrogen freezes at -210 degrees Celsius, this represents a physical change, not a chemical change. During a physical change, a substance changes its state (liquid, solid, or gas) without altering its molecular structure. For example, when nitrogen becomes liquid nitrogen thanks to liquefaction through compression and cooling, it remains chemically identical but changes from a gas to a liquid state.
On the contrary, during a chemical change, a substance's molecular structure is altered through a chemical reaction. The substance forms different compounds or elements. For example, nitrogen fixation is a chemical change where organisms convert atmospheric nitrogen gas into biologically useful chemicals.
Learn more about Physical Change here:
https://brainly.com/question/36465720
#SPJ11
