Question 12
Adding salt to water can increase the boiling point and decrease the freezing point of water. James used the set-up below to make his own ice cream. What would James observe after three minutes?
I The creamy syrup would be frozen.
II The creamy syrup would not freeze.
III A thin layer of ice would form on the outer surface of the metal cup.
A. I only
B. II only
C. I and III only
D. II and III only
Editorial review: explain the scientific problem in the original choices and justify a qualified conclusion.
I The creamy syrup would be frozen.
II The creamy syrup would not freeze.
III A thin layer of ice would form on the outer surface of the metal cup.
A. I only
B. II only
C. I and III only
D. II and III only
Editorial review: explain the scientific problem in the original choices and justify a qualified conclusion.