If the Universe was born at the Big Bang, what existed before then?

Pretty sure one of my science teachers said that there was some kind of gas called a ultrahot that existed before the big bang

it's a extremely hot gas

:)

t's possible that before the Big Bang, the universe was an infinite stretch of an ultrahot, dense material, persisting in a steady state until, for some reason, the Big Bang occured. This extra-dense universe may have been governed by quantum mechanics, the physics of the extremely small scale, Carroll said.

Explanation:

3 notebooks and 3 pencils packages

step-by-step explanation:

((3×1.25)+(3×2.75))=12

3×1.25=3.75

3×2.75=8.25

3.75+8.25=$12

yes u so smart, u no need me me slant eye is hard to open when i read u q