1. What is the difference between a proton and a positively charged hydrogen ion?
a. Protons are neutral and hydrogen ions have a positive charge.
b. Hydrogen ions have one electron and protons don't have any.
C. Protons weigh more than hydrogen ions
d. They're the same thing.

Jenny places a strip of ph paper into a solution. when she removes the ph paper, it has turned yellow-green. what should jenny do next to determine the ph of her solution? a. use a different testing method because the ph paper should not change colors b. place the ph paper into a machine that reads the ph of the solution c. compare the ph paper's color with the color of ph paper from another solution d. compare the ph paper's color with a chart of colors and ph ranges