Basic

Definition

Basic refers to substances with a pH greater than 7. They have a higher concentration of hydroxide ions (OH-) compared to hydrogen ions (H+).

5 Must Know Facts For Your Next Test

1. Basic solutions turn red litmus paper blue.
2. The pH range for basic solutions is 7 to 14.
3. Common examples of bases include sodium hydroxide (NaOH) and ammonia (NH3).
4. Bases can neutralize acids to form water and a salt.
5. In aqueous solutions, bases increase the concentration of hydroxide ions (OH-).

Review Questions

• What is the pH range for basic substances?
• How do basic solutions affect red litmus paper?
• Name two common examples of basic substances.

Related terms

pH: A measure of the hydrogen ion concentration in a solution; it determines how acidic or basic a solution is.

Hydroxide Ion: $\text{OH}^-$, an ion commonly found in basic solutions.

Neutralization: A chemical reaction between an acid and a base that produces water and a salt.