Question

All of the following require breaking and forming chemical bonds except

freezing ice
a plant decaying
a piece of silver tarnishing
roasting a marshmallow

Answer 1

All of the following require breaking and forming chemical bonds except roasting a marshmallow. Freezing ice, a plant decaying and a piece of silver tarnishing are examples of breaking and forming chemical bonds.

Answer 2

The correct option is "freezing ice"

Step-by-step explanation:

Breaking and forming of chemical bonds occurs during a chemical reaction. Freezing of ice is not a chemical reaction as it does not involving breaking and forming of chemical bonds - rather it involves the slowing down of the molecules of water by greatly reducing the temperature which ultimately causes the restriction of the molecules of the liquid water forcing them to arrange in fixed positions as solid ice.

The other options involve chemical reactions.