Question

why does gum doesn't stick on it's bottle.

Answer 1

As the water evaporates, the gluedries and hardens. All that's leftare the sticky polymers that hold things together. This process is called mechanical adhesion. ... When white glue is inside a bottle, there's not enough air inside thebottle to cause the water to evaporate to make the glue sticky.

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Answer 2

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As the water evaporates, the glue dries and hardens. All that's left are the sticky polymers that hold things together. ... When white glue is inside a bottle, there's not enough air inside the bottle to cause the water to evaporate to make the glue sticky.

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