The chemical B2O3 is added to silica glass in order to increase the softening point. decrease...
The chemical B2O3 is added to silica glass in order to
increase the softening point.
decrease the softening point.
change the chemical properties.
reduce the viscosity.
Homework Answers
Silica glass has high thermal expansion coefficient, so it cracks when heated to a high temperature. Addition of B2O3 reduces the thermal expansion coefficient of glass and also decreases the melting and softening temperature of silica glass.
Option 2 is correct.
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