The document describes the pH scale and color indicators used to determine acidity and alkalinity levels. pH levels 1-3 are indicated by red and orange colors and represent strong acids, while pH levels 4-6 shown in yellow and light green represent weak acids. Neutral solutions are green at pH 7, and weak and strong alkalis are indicated by blue and purple shades from pH 8-14 respectively.

1. Ph Scale.

2. Ph 1
• Deep red=Strong Acid

3. Ph 2
• Red=Strong Acid

4. Ph 3
• Orange=Strong Acid

5. Ph 4
• Yellow=Weak Acid

6. Ph 5
• Yellow/Green=Weak Acid

7. Ph 6
• Light Green=Weak Acid

8. Ph 7
• Green=Neutral

9. Ph 8
• Green/Blue=Weak Alkali

10. Ph 9
• Blue=Weak Alkali

11. Ph 10
• Dark Blue=Strong Alkali

12. Ph 12
• Navy Blue=Strong Alkali
• (miss out 11)

13. Ph14
• Deep Purple=Strong Alkali

14. Thanks Folks!!!
• By Anonymous