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Why should you never pour hot liquids into cold drinking glasses?
Wiki User
∙ 9y ago
Most types of glass aren't designed for hot drinks. When one part of the glass is suddenly heated up other parts might not be, the stress put on the brittle glass causes it to crack or shatter possibly spraying people near by in hot liquid.
Juliet Olson
Wiki User
∙ 14y agoFirst, the term for this is called "Thermal Downshock."
What happens is, the cooled surface shrinks in comparison to the glass inside, and the tension makes the glass break.
Abrasions, chips, and knife scores can intensify the breakage.
Thermal Downshock can also happen if you put a hot glass dish on a cold surface (granite countertop, etc). So always put the dish on a cooling rack, cooling pads, trivets, or potholders. If you have a gas stove, you can put the dish on the burner grates and it will be safe.
Wiki User
∙ 6y agoThe glass can break because of the thermal dilatation.
Wiki User
∙ 13y agoThe hot liquid could crack a cold glass.
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