Please somebody help

How might this scientific phenomena be explained? a paper clip floats on water.

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

Chortling is used to clean water. another possible atom that would also work is a. sodium b. sulfur c. bromine