AP BIOLOGY

Detailed explanation-1: -Water boils at 100°C at sea level and at slightly lowered temperatures at higher elevations. To bring a pot of water to a boil, its temperature must first be raised to 100°C. This temperature change is achieved by the absorption of heat from the stove burner.

Detailed explanation-2: -When the vapour pressure reaches an equivalent value to the surrounding air pressure, the liquid will boil. At sea level, vapour pressure is equal to the atmospheric pressure at 100 ˚C, and so this is the temperature at which water boils.

Detailed explanation-3: -On the Celsius scale, water boils at 100°, so if the water is not boiling and the measurement is over 100°, then it cannot be Celsius. The correct answer is Fahrenheit. Correct. Water boils at 212° on the Fahrenheit scale, so a measurement of 132° on a Fahrenheit scale is legitimate for hot (but non-boiling) water.

Detailed explanation-4: -When the temperature of the water reaches 100°C, the water begins to boil. Here, too, the temperature remains constant at 100°C until all the water has been converted to steam.

Detailed explanation-5: -The answer is ‘boils. ‘ Water boils at 100° C.