1) Was the pH of any of the solutions significantly different than what you hypothesized? Explain 2) What is the pH range of the solutions you tested? Are any of the solutions very acidic or very basic? 3) What does pH measure? 4) Compare the hydrogen ion concentration in vinegar to window cleaner. 5) Is pH an absolute or a relative measure? Explain 6) Word Origins. The p in pH stands for the German word Potenz, which means "power" or "potential". The H represents the hydrogen ions (H+). How are these related to the definition of pH? 7) Describe the relationship between the hydrogen ions (H+) and pH. How is pH related to a solution’s acidity? 8) Do you notice anything about the solutions on the pH scale, their pH, and their location on the pH scale?