Question

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When you melt glass, the glass changes from a solid to a liquid. When the heat source is removed and the melted glass is allowed to cool, it changes back into a solid.
The transfer of energy caused a change to the _____ of glass.
a.) physical properties
b.) internal properties
c.) chemical properties

Answer 1

a) physical properties because it is not changing its chemical properties and there is no such thing as internal properties.