Chemistry · Acids, Bases and Salts
Tooth enamel contains calcium hydroxyapatite. Tooth decay begins when the pH value in the mouth falls below which level?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1pH between 7 and 9.2
- 2pH = 7
- 3pH > 9.2
- 4pH < 5.5✓
Correct answer
pH < 5.5
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