Describe how the density of the early universe changed with time?

Question

like in terms of the fundemental forces..how did they combine to form matter in the first place?

Answer 1

When the first space-time pulse arrived it was merely a two dimensional entity with no density.
Each successive pulse cubed the essence of the beginning and it expanded radially,accelerating [Like an explosion] for one -thirty billionths of a second.The radial expansion reached the speed of light and the acceleration stopped.
At this point the universe was about 2 cm in diameter,it's density was at it's maximum but began to wain as matter began to emerge..
This 2 cm diameter entity contained all the ingredients to evolve into the universe we see today.
It is a quantum,finite entity with a maximum and a minimum density when the minimum density is reached ,it will begin to go out of existence.

Answer 2

Immediatly before the big bang the universe was theoretically at the event horizon and at a desity D approaching infinity. After the big bang, matter was dispersed and continues to disperse over a volume V(t) defined by time t.