In reversible hydrocolloid the property by which the transformation from sol to gel and gel to sol is a function of the_____________?
Correct answer: D. Temperature
- A. Concentration of filler and plasticizer
- B. Percentage composition by weight of water
- C. Concentration of potassium sulphate
- D. Temperature
Explanation
Reversible hydrocolloid changes from sol to gel and back according to temperature: cooling produces gelation and heating produces liquefaction. This temperature dependence distinguishes it from irreversible alginate hydrocolloid.
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