Question

multiple choice question
after ice has melted, the added heat causes ______
re - formation of hydrogen bonds
large separation between the water molecules
an increase in the speed of molecular motion
the overall temperature of water to remain constant

Explanation:

When heat is added to melted ice (water), it increases the kinetic energy of water - molecules. Kinetic energy is related to the speed of molecular motion. Adding heat does not cause re - formation of hydrogen bonds (which would release energy), does not cause a large separation between water molecules (which would be more related to vaporization), and does not keep the overall temperature of water constant (temperature rises until it reaches boiling point).

Answer:

C. an increase in the speed of molecular motion