* Chemical Composition Changes: The resin undergoes a series of chemical reactions over time. It loses volatile compounds (like terpenes) and undergoes polymerization, where smaller molecules bond to form larger, more complex ones. This fundamentally alters the resin's chemical structure.
* New Properties: The hardened amber has different physical properties compared to the original resin. It's harder, more brittle, and often has a different color. These changes are due to the new chemical bonds formed during the process.
In summary: The transformation of resin into amber involves a permanent change in the chemical composition, leading to new properties. This makes it a chemical change.
