Mist, clouds and fog consist of tiny (liquid) water particles floating in the air. These usually appear when gaseous water in the air is cooled to form liquid water.
There are 3 changes of state.The change of state from water to water vapor is called evaporation.The change of state from water vapor to clouds is called CONDENSATION.The last state is precipitation,which is the clouds getting heavier resulting to the production of rain.
chemical because it is changing the state from solid to a gas in which is a chemical change
Although many people think they are in solid form or water vapor, clouds are actually liquid water. It's impossible for them to be water vapor, because vapor is invisible. Clouds are not invisible.
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Heat radiation causes water vapour from lakes and oceans to go up into the clouds. When the clouds form it is condensation. Or... The clouds get so heavy, that it moves to another area and makes flurries, snow, or rain:)
Clouds are formed by water vapors condensations. And the processes implied in the formation of clouds (evaporation, condensation, freezing) are all change of matter - physical changes. A chemical process need a change in the nature of the chemical reactants - but in this case the chemical formula of water (H2O) remain the same.
There are 3 changes of state.The change of state from water to water vapor is called evaporation.The change of state from water vapor to clouds is called CONDENSATION.The last state is precipitation,which is the clouds getting heavier resulting to the production of rain.
The enthalpy of formation of a substance is the amount of energy that was put in or evolved from the making of that substance from the individual elements.
Clouding is a purely physical process of condensing vaporous water into liquid water (also freezing or sublimating it to solid ice / hail / snow) . Chemically nothing has changed (water molecules stay unchanged, still being water) only there (physical) state (this is a kind of 'condition' of matter) has changed.
The formation of hail is a physical change as it merely involves water going from a liquid state to a solid state.
This is called a change in the physical state of the substance. For example formation of ice from water is a change in the physical state of water.
Signs of chemical reactions may be: - Gas release - Formation of a precipitate - Change of color - Change of odor - Change of pH - Change of aspect - Change of viscosity - Change of the temperature - Visible formation of new compounds - Change of the state of the matter - A violent reaction with explosion or fire - Bubbling - Emitting a sound - Emitting a light----------------------------------------------------------------During a physical change the molecule composition is not affected.
chemical because it is changing the state from solid to a gas in which is a chemical change
All these following are remarquable.Some indicators of a chemical reaction are:- change of color- change of odor- release of a gas- change of the temperature- change of the viscosity- formation of a precipitate- change of general appearance- possible explosion- possible chemiluminescence -formation of new compoundsVery probable the formation of new compounds is the most important.
Temperature remains constant during the change in phase (physical state).
During the time of change of state,the heat or temperature is used to increase the potential energy and there by change of state.This time there will be no change in temperature.
Vaporization is the process in which liquid turns into gas.