Question

A MARSMALLOW IS TOASTED OVER A FIRE . IT TURNS A GOLDEN BROWN AND CARAMELIZES ON THE OUTSIDE. IT BEGINS TO MELT ON THE INSIDE. WHAT TYPE OF CHANGE IS OUTSIDE OF THE MARSMALLOW UNDERGOING?

Answer 1

Explanation:

Marshmallows are mainly sugar, but air actually makes up more than half their volume. They’re made by beating together gelatin or another gel-forming ingredient with a hot sugary syrup. Beating the mixture creates air bubbles, which become trapped as the liquid mixture cools into a gel — creating the spongy texture.

Those bubbles are why Peeps explode in the microwave, and flaming marshmallows swell on the end of a toasting fork. Hotter temperatures makes the air trapped inside the marshmallow expand and take up more space, forcing the flexible sugary mixture to stretch.