If you need to identify a material without changing the object in anyway, should you use physical or chemical properties?

you need to identify the materials in an object without changing the object in any way. Should you use physical or chemical properties to identify the material? Explain your choice. You should us physical properties because if you used chemical properties, you would have changed the material in the object.

THIS IS YOUR ANSWER PLZ MARK AS BRAINLIST

h let me think

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