Royal Society of Chemistry Molecule Hunt. Freshney Place Shopping Centre, Grimsby DN31 1ED 14 -23 March for National Science and Engineering Week. Grab an entry form from the Customer Service Desk and hunt down 10 molecule models of health-related substances in appropriate shops. Oooh - guess where 'caffeine' is? Slurp! Three winners will get a £50 gift card and a Visual Elements Trumps Game if their correct entry is picked after 23 March.