Give the change in condition to go from a liquid to a gas.
A) increase heat or reduce pressure
B) increase heat or increase pressure
C) cool or reduce pressure
D) cool or increase pressure
E) none of the above

Question

Quizplus · Accepted Answer

To go from a liquid to a gas, the heat energy must be increased or the pressure must be reduced. When heat is added, more kinetic energy is given to the particles, causing them to break free from the attractive forces that hold them together in a liquid. Alternatively, reducing the pressure around the liquid causes the vapor pressure of the liquid to become greater than the external pressure, allowing the liquid to boil and turn into a gas. Therefore, the correct change in condition to go from a liquid to a gas is to increase heat or reduce pressure.

Give the Change in Condition to Go from a Liquid