They are called substitutes.
A brace is when a player gets 3 goals over 2 consecutive games EG - a player scores one goal in the one game and the next game he scores 2 goals that would be classed as a brace
emotional social action
I think it is vaseline for players to apply to their lips during the game to prevent chapping.
about 2-3 minutes, but it seems as if it were more though.
I think you mean a hat-trick. In soccer, when a player scores three goals during a match, he is awarded a 'hat-trick' which in today's game means keeping the match ball. Historically, it was a hat, hence the name. When soccer (Association Football) was in its infancy in England during the 1860s, a hat was a valuable and needed piece of clothing. Two goals in one match is a 'brace', for which their is no reward, except perhaps, contractually.
SEBASTIAN KEHL, hope that's the guy you are looking for
The usual number of girls that play on the field during a U9 soccer game is 6 players.
No. Once a player is substituted for, they may not reenter.