How many White pieces are there at the start of a Chess game?

Name the Chess piece which moves only in Straight lines (Horizontal and Vertical lines)

Name the Chess piece which moves only on Diagonals. (Slanting)

Which Chess piece has the power of Jumping over others?

Name the strongest Chess piece. (Highest valued)

Name the least valued Chess piece. (Lowest points)

Name of the Chess piece which has to be Check-mated to win a game.

Which Chess piece has the power of becoming any Higher-valued piece when it reaches the other side of the Chess board?