A "header".
A one touch pass is when a player immediately passes the ball when he receives it. It is called a One-Touch because he player only contacts the ball once.
It isn't called soccer ball because the soccer ball is the ball you use in soccer. See? I have actually heard people call it soccer and soccer ball.
soccer ball, just did it
That is called a spike.
A clearance
Giving head
tackle
It's called passing or pass
usually it is called a trap or trapping the ball
a soccer game is 90 minutes, there are 22 players in the field, if you say that a player touches a ball 2/3 of the time, 60/22=almost 3 minutes. This is an estimate, for a striker will have far less ball contacts as a midfielder.
Obstruction
A soccer ball is a sphere.