Question

Which change of state occurs at 100 °C when heat energy has been added to liquid water?

A. boiling
B. melting
C. freezing
D. condensing

Answer 1

The answer is A. boiling because 100⁰ Celsius converts to 212⁰ Fahrenheit, and water boils at 212⁰F

Answer 2

A. Boiling

Boiling point is 100 degrees Celsius

I hope that helps u! :)