Chromatic scale is a musical scale with 12 Pitches. Each of them are a Semitone above or below it's adjacent pitches. Result in 12-Tone equal temperament, The Chromatic scale covers all 12 of the pitches that are available. Also there is only one Chromatic scale. Nobody really knows why there are only 12.
The major and minor scales have 7 different notes, chromatic has 12 different notes, and whole tone has 6 different notes, all of which are in their one-octave scales.
