Which of these is a physical property
a. Ability to burn a peice of paper
B. Pure sodium reacts violently with water
C. The boiling point of water is 100 degrees c
D. Helium does not tend to react with anything
this is a physical property because as water boils, it undergoes a physical change. every other option talks of reactions or processes that would result in chemical change (and are therefore chemical properties)
