When physical properties are measured their identity will be changed. True or False

False

Explanation:

 A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.