Which best represents a balanced equation? A.
4H + 2O2 eq132916_b1 2H2O2

B.
HgO eq132916_b1 Hg + O2

C.
2Fe + O2 eq132916_b1 Fe2O3

D.
2H2 + O2 eq132916_b1 2H2O

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

the answer is true. hope it .