Final answer:
The pH value of a substance determines whether it is acidic, neutral, or basic.
Step-by-step explanation:
The pH value of a substance determines whether it is acidic, neutral, or basic. The pH scale ranges from 0 to 14, with 0 being the most acidic, 7 being neutral, and 14 being the most basic. To determine the pH value of a substance, you need to know its chemical properties and the concentration of hydrogen ions in the solution.
Unfortunately, the pH values of specific substances like Hydroxypropyl methylcellulose, Magnesium stearate, Polyethylene glycol 400, Polysorbate 80, Starch, and Titanium dioxide are not mentioned in the provided information. Without this information, it is not possible to determine the pH values of these substances accurately.