Ineed a concluding sentence for my conclusion this is what i have so far: in conclusion we discovered that lamp oil has the most surface tension and polarity. we could fit the most drops of lamp oil on the penny without the bubble breaking. 34 drops was the maximum amount of drops we got. lamp oil is a very polar substance

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