A student tested a sample of carbon (C) by combining it with water. There was no reaction between the carbon and water. The student concluded that carbon must be a
group 18 element, since it was unreactive is this conclusion correct? Why or why not?

A. Yes Water would react with almost every element, except Group 18 elements
B. No. The carbon probably did react, but did not give off any signs or indications of a chemical
change
C. No. Just because carbon did not react with water, does not mean it wouldn't react with a
different compound
D. Yes. The student can make a reasonable conclusion based on one experiment.