What is the Chord with the notes C, E, G, B in it are called?

[arren31]

What I really meant is: What is the chord with the 1st, 3rd, 5th, and 7th notes of scale called?

[hardy_practice]

It's a 7th chord.  If it was Bb it'd be a dominant 7th chord.

[arren31]

Thank you

[chopinlover01]

Specifically, a major seventh.
In the key of C, the sevenths break down like this;
Major seventh (notated as Cmaj7 or C+7): C E G B
Dominant seventh (notated as C7): C E G Bb
Minor seventh (notated as Cm7 or C-7): C Eb G Bb
Half diminished seventh (notated typically as C minor flat five): C Eb Gb Bb
Diminished seventh (notated as Cdim7 or C^o7): C Eb Gb Bbb (B double flat, en-harmonically equivalent to an A natural)

[xdjuicebox]

Specifically, a major seventh.
In the key of C, the sevenths break down like this;
Major seventh (notated as Cmaj7 or C+7): C E G B
Dominant seventh (notated as C7): C E G Bb
Minor seventh (notated as Cm7 or C-7): C Eb G Bb
Half diminished seventh (notated typically as C minor flat five): C Eb Gb Bb
Diminished seventh (notated as Cdim7 or C^o7): C Eb Gb Bbb (B double flat, en-harmonically equivalent to an A natural)

Also less correct but some people use it sometimes is the minor major seventh, C Eb G B, used for the augmented sound.
I find it very useful to think about the chords in intervals as well
M7 is M3m3M3
m7 is m3M3m3 and so on

[dcstudio]

augmented generally refers to the fifth not the seventh..

but that is a really cool chord... the Cmin maj7 and if you want to hear what it sounds like -- here it is along with the BbminMaj7... in one of the coolest latin jazz standards there is:   Nica's Dream performed by the great Horace Silver..  the first two chords of the form and theme are the MinMaj7s

and that is your jazz appreciation lesson for today. by dcstudio

I can pretty much guarantee that you will like this tune... give it a click.

  --make sure you listen to the piano solo!! it's a classic