When naming organic compounds, there are strict rules regarding punctuation. A comma is used to separate two numbers. A hyphen is used to separate a number from a letter. Rewrite the name of this compound using hyphens, commas, or both as appropriate. 3ethyl2methylhexane:

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

i believe it is c.) 1575 j.