Question

How can you tell if a substance is an base or an acid

Answer 1

Answer:

To determine whether a substance is an acid or a base, count the hydrogens on each substance before and after the reaction. If the number of hydrogens has decreased that substance is the acid (donates hydrogen ions). If the number of hydrogens has increased that substance is the base (accepts hydrogen ions).

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Answer 2

The ph scale measures whether a solution is acidic, neutral or basic. The standard pH scale runs from 0 to 14. A reading of 7 is neutral, based on the pH of pure water. Acidic solutions have a pH below 7, while basic solutions have a pH above 7.
To test whether the substance is an acid or a base, we use indicators. Eg-turmeric paper, methyl orange,etc.