Acids and bases
6 questions tagged Acids and bases — spanning every one of the seven Ws.
What is pH?
pH is a scale that measures how acidic or basic a solution is. It is based on the concentration of hydrogen ions.
What is an acid?
An acid is a substance that increases the concentration of hydrogen ions in water. Acids typically have a pH below 7.
What is a base in chemistry?
A base is a substance that can accept hydrogen ions or release hydroxide ions in water. Bases usually have a pH above 7.
How do pH values measure acidity and alkalinity?
The pH scale measures how acidic or basic a solution is based on hydrogen ion concentration. A pH of 7 is neutral, below 7 is acidic, and above 7 is alkaline.
What is a pH scale?
The pH scale measures how acidic or alkaline a solution is, usually from 0 to 14. A pH of 7 is neutral, lower numbers are acidic, and higher numbers are basic.
How does pH measure acidity and alkalinity?
pH measures how many hydrogen ions are present in a solution on a scale from 0 to 14. A lower pH means more acidic, while a higher pH means more alkaline.