Steam is what you see above a boiling kettle. Steam is hot water in droplets almost big enough to see - but you can see the cloud of droplets. There must be stages in between, where a few water molecules are sticking to each other, but the droplet is too small to see.
What are the differences between steam and water vapor, and what is the best term to use to describe the white cloud of water droplets above a boiling kettle? Answer 1: Steam and water vapor are both used to describe water in the gaseous state.
Answer 2: This is a classic "rectangles-squares" question. Answer 3: Steam and water vapor, scientifically speaking, both refer to water molecules in the gas phase , in other words, the water molecules that freely float in the air. Answer 4: Steam and water vapor are the same thing.
Answer 5: Water vapor is water as a gas, where individual water molecules are in the air, separate from each other. With any body of water, water molecules are always both evaporating and condensing. The vapor pressure of water is the pressure at which the gas phase is in equilibrium with the liquid phase. The high surface tension of water water "sticks" to itself, so it doesn't "want to" evaporate means water has a low vapor pressure. Vapor pressure is constant when there is an equilibrium of water molecules moving between the liquid phase and the gaseous phase, in a closed container.
Vapor pressure is constant when there is an equilibrium of water molecules moving between the liquid phase and the gaseous phase , in a closed container. Note the mention of a "closed container". In an open container the molecules in the gaseous phase will just fly off and an equilibrium would not be reached, as many fewer gaseous molecules would be re-entering the liquid phase. Also note that at equilibrium the movement of molecules between liquid and gas does not stop, but the number of molecules in the gaseous phase stays the same—there is always movement between phases.
So, at equilibrium there is a certain concentration of molecules in the gaseous phase; the pressure the gas is exerting is the vapor pressure. As for vapor pressure being higher at higher temperatures, when the temperature of a liquid is raised, the added energy in the liquid gives the molecules more energy and they have greater ability to escape the liquid phase and go into the gaseous phase.
Let's say you liked to eat turnip greens but didn't like the smell of them cooking. W ater vapor is water in its gaseous state-instead of liquid or solid ice. Water vapor is totally invisible. If you see a cloud, fog, or mist, these are all liquid water, not water vapor. Water vapor is extremely important to the weather and climate.
When water is in its solid state ice , the water molecules are packed close together preventing it from changing shape. Ice has a very regular pattern with the molecules rigidly apart from one another connected by the hydrogen bonds that form a crystalline lattice. This is why ice floats on water. As the liquid cools down, the amount of potential energy is reduced and the molecules start to move slower. Answer 5: Water vapor is water as a gas, where individual water molecules are in the air, separate from each other.
Steam is what you see above a boiling kettle. Steam is hot water in droplets almost big enough to see — but you can see the cloud of droplets. Keep in mind that sometimes, the orders of the questions change. An X will be by the correct answer each question! Which term. Identify which of the following changes is exothermic. They are different states of matter B. They are different compounds C. They are made of different kinds of molecules.
They are mad of different kinds of. Calculate the change in heat when
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