Ph is the a measure of the
1) concentration of hydrogen ions in solution
2) concentration of compounds in solution
3) concentration of oh- in solution

The correct answer is:

1) Concentration of hydrogen ions in solution

- I can verify this is correct because I took the test.

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