Lianne Sanderson hit a hat-trick as the champions thrashed Cardiff at Meadow Park.
Jayne Ludlow and Faye White got in on the act before Sanderson completed her hat-trick five minutes after the break.
Gemma Davison grabbed the eighth goal and White doubled her tally as Arsenal maintained their 100 per cent record in the Premier League this season.
Copyright 2013 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 12 Nov 2007