* 0-6: Acidic
* 7: Neutral
* 8-14: Alkaline (basic)
What does react are the substances that contribute to the pH of a solution. Here's a breakdown:
* Acids: Acids release hydrogen ions (H+) into a solution. The more hydrogen ions, the lower the pH (more acidic).
* Bases (alkalines): Bases accept hydrogen ions (H+) from a solution. The fewer hydrogen ions, the higher the pH (more alkaline).
Examples of reactions involving pH:
* Acid-base reactions: Acids and bases react to neutralize each other. This reaction consumes hydrogen ions from the acid and produces water (H2O).
* Metal corrosion: Acids can react with metals, leading to corrosion.
* Enzyme activity: The pH of a solution can affect the activity of enzymes, which are biological catalysts.
* Chemical reactions: Many chemical reactions are influenced by the pH of the solution.
Key takeaway: pH itself doesn't react. It's the substances that contribute to pH (acids and bases) that actually participate in chemical reactions.
