as per first question: there is adhesive force acting between the two. as a result of this, liquid does not wets the wax paper and also, the angle of contact is obtuse
in the second question it is surface tension.
The characteristic you're investigating by floating a paperclip is cohesion.
Here it is, just a few hours before school, and I haven't finished my homework! :X Please help me by answering these few questions that I am entirely too lazy to look for myself, and I will offer you nothing as compensation in return!
Lazy *** Youth