Evidence of a chemical change includes a) change in size. b) change in color. c) change in shape. d) change in weight. evidence of a chemical change includes a) change in size. b) change in color. c) change in shape. d) change in weight.

The answer is actually B) change in color

Explanation:

Here's why: A chemical change changes the substance. Evidence of a chemical change include evolving gas and changes in color or temperature

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.

idk what the question is about