A space probe landed on a alien moon and found that its surface temperature was about --297.33°F. State the phase(s) (solid, liquid, vapor) of each of the following substances on that moon's surface, based on their melting point and boiling point. This temperature is: ___ K

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

what's the

i think it's c. i'm not sure but i think so.