Explore the pH scale, and discover whether a solution is acidic, alkaline or neutral.
- The pH scale measures whether a substance is acidic or alkaline.
- Acids have a pH between 0 and 7.
- Alkalis have a pH between 7 and 14.
- A neutral solution will have pH 7.
pH scale measures whether a solution is acidic or alkaline
0 = strongly acidic
14 = strongly alkaline
7 = neutral
Add Universal Indicator to reveal pH
Red = strongly acidic
Orange/yellow = acidic
Green = neutral
Blue = alkaline
Purple = strongly alkaline
What are the pH values of these substances?
Stomach acid 1
Distilled water 7
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