Helpp!! I need to know what is the main difference between the sculptures of the Archaic period and the sculptures of the Classical
period, could someone help me out?

In the Archaic, statues were rigid, resembling the Egyptians. In the Classical period, sculpting was relaxed and became more graceful and less rigid, and new orders of columns were made.

Explanation:

a chromatic scale uses the twelve tones of the octave, while a regular scale only uses eight, or seven different notes (as the first note is played twice)