While your kiddos might not understand what a hydrogen bond is, with a few simple materials, they can witness the attractive force at work as they explore water's cohesive tendency - or in 'kid speak', how drops of water like to stick together. Materials spray bottle water wax paper drinking straw Completing the Lab 1. Provide each student with a piece of wax paper and a drinking straw. 1. Using a spray bottle, spray a small amount of water onto the wax paper. 1. Invite students to...