Basically there are 8 notes in a scale - for example the increasing C major scale is, C-D-E-F-G-A-B and back to C. The link below will give you further information.
The diatonic scale that is played mostly on the black keys is F# major (also known enharmonically as Gb Major). The scale that is played only on black keys is the five note F# pentatonic scale. (AKA Gb pentatonic scale).
White keys are for the major scale, black keys for the minor.
The scale that includes all black keys on the piano is called the D minor scale.
The scale that includes only the black keys on a piano keyboard is called the pentatonic scale.
Only one: the F-sharp.
The keys are C D E F G A B, there are no key signatures in C major scale
The pattern of the all black keys scale on a piano keyboard follows a sequence of alternating groups of two and three black keys.
An 88-key piano has 36 black keys. These black keys are arranged in groups of two and three, and they correspond to the sharps and flats of the musical scale. The remaining 52 keys are white keys, which represent the natural notes.
The minor guitar scale pattern for playing in different keys is the natural minor scale. It follows a specific pattern of whole and half steps that can be moved up and down the fretboard to play in different keys.
You'll have to rephrase your question. There are no major keys in a chord. A chord is three or more notes sounded simultaneously. A major key is the set of notes in a major scale. There are chords within keys, there are no keys within chords.
The black keys scale consists of the notes A, B, D, E, and G. This scale can be used in music composition to create unique and exotic sounds, add tension and color to a piece, or to modulate to different keys for variety and interest.
In music theory, keys and scales are important concepts. Keys refer to the group of notes that a piece of music is based on, while scales are sequences of notes that create a specific sound or mood. Common keys include major and minor keys, while scales like the major scale, natural minor scale, and pentatonic scale are frequently used in music.