When you place one solid surface against another,
tiny gaps between the two keep them from sticking togther.
Because glue is a liquid, it fills in these gaps.
Once the glue hardens and dries, it creates a strond bond between the two surfaces.
The sap from the pintree is a natural glue too!!
There are more sticky things around us.
Like honey, slime, jelly, melted candy.
Today I told you about why glue stick, and some objects sticky around us.
BYE!!