The Queen is the most powerfull piece and combines the powers of both the Rook and the Bishop. It can move horizontally, vertically, or diagonally. However, even the Queen is unable to jump over another piece.
The following diagram gives an overview of these possibilities to move and capture. The white pawn is blocking the path of the Queen. A black pawn on the same place can be captured, but the Queen is still unable to jump over it.



Next lesson: the King.