Evidence that water can boil at a temperature of 0°C? Ice will form in boiling water in a vacuum chamber. Pressure is greatly reduced, water starts to boil. Continued boiling results in lowered temperature, and lower boiling point.
Is it the boiling of the water or the higher temperature of the water that cooks food faster in a pressure cooker?
At that pressure, water boils at 121°C (250°F). That means food can cook at a much higher temperature than it ever could at atmospheric pressure—and since cooking reactions speed up at higher temperatures, your food cooks faster. It also doesn’t dry out, since the water stays in liquid form.
Why does water vapor in the air condense when the air is chilled?
Why does water vapor in the air condense when the air is chilled? Cool air contains more slow water molecules, which stick together more often when they collide. … Rising air expands and cools. Water drops condense when moist air cools.
What happens to the water pressure at the bottom of a geyser when some of the water above gushes out what is the result?
What happens to the water pressure at the bottom of a geyser when some of the water above gushes on? As water gushed out, the pressure on the remaining water is reduced; the water boils rapidly and erupts with great force. Afterwards, the geyser refills and repeats the cycle.
Does liquid release energy or absorb energy when it changes into a gas?
Does a liquid release energy or absorb energy when it changes into a gas? A liquid absorbs energy when it changes into a gas.
What causes a gas to condense into a liquid when it cools quizlet?
The energy is in the form of heat, and when the heat energy leaves with the evaporating liquid, the surroundings get cooler as a result. … When condensations forms, water vapor condenses from a gas into a liquid. The liquid state requires less energy than the gas state.
When you walk barefoot on red hot wooden coals It is best if group of answer choices?
Calculate the Price
|Changes of phase most always require _________.||a transfer of energy|
|Absorbed by the vapor||When vapor transforms to a plasma, energy must be|
|No pieces of metal are among the coals||When you walk barefoot on red-hot wooden coals it is best if|
|slow-moving water molecules sticking to one another.|
What happens when water Vapour in the air comes in contact with a cool surface?
Ans: When air comes in contact with a cool surface, it condenses and drops of water appear on cool surface.
Why does water vapor decrease with altitude?
Altitude and height play an important role in vaporization of the water as water vapours are heavy and at higher altitude, the air density decreases. Thus, it becomes difficult for heavier particles that make water vapours to get vaporized. Hence, the rate of water vaporization decreases with increase in altitude.
How much energy can be taken from a system at a temperature of 0 K?
How much energy can be taken from a system at 0 K? When a system is at 0 K no more energy can be taken. This is absolute zero and implies that all the molecules are completely at rest (no kinetic energy) and no more energy can be taken.
Is energy added or released when boiling water is changed to steam?
The molecules in the steam have (more or less) Kinetic Energy. When liquid water turns to steam the molecules move (faster or slower) and heat is (added or removed) from the water.
Why does the temperature of boiling water remain constant when heat is continuously being added?
When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. … In addition, gas molecules leaving the liquid remove thermal energy from the liquid. Therefore the temperature of the liquid remains constant during boiling.