What is a chromatic scale?

Answer 1

The chromatic scale is ascending and or descending by half step motion through all of the available twelve notes in western music.

Answer 2

A chromatic scale is comprised of 12 notes strung together in a series of consecutive half steps (or semi tones) going from any given root note up to its octave. On the piano, it would run through each note, both black and white. On a single string of the guitar, it would run up each adjacent fret.

Answer 3

A chromatic scale consists of a series of 12 consecutive notes, each a half step apart. So on the piano keyboard, it uses all of the black and white keys.