So far, we have covered the importance of the three phases of water in shaping the surface of the planet, as well as examples of homogeneous and heterogeneous mixtures found in the workplace.
Water, as Ive discussed before, exists in one or a combination of three phases in nature, all of which have an effect on the surface of the planet. During wintertime, relatively small bodies of water turn into a solid white crust, thanks to the solidification of the liquid water into ice. The solid ice floats atop warmer water, as a consequence of its lower density compared to the liquid. This property allows for life to thrive under water during winter. The solidification of water to ice also shapes the planets surface via the freeze-thaw cycle, where during cold weather the trapped water in rocks turn to ice, which expands and, occupying more volume than water, pushes the constituents of the rock apart. The ice melts when it gets warmer, then solidifies back in the cold. This cycle tears the rock apart so that in time it is reduced to smaller pieces, which could be blown by the wind, pushed by running water or roll down due to gravity so that the surface features of the planet changes. The vaporization of liquid water to gaseous vapor and into liquid or solid also plays a role in shaping the earth, via the water cycle. The liquid precipitation, in the form of rain, cuts channels through rocks and soil as it flows to rivers, lakes and oceans, causing depressions on the surface that could in time be permanently filled up with water to make new bodies of water. Solid precipitation, like hail, destroys standing structures, clearing the land so that it can be acted on by the elements which could further shape it.
Many examples of homogeneous and heterogeneous mixtures can be found in the workplace, as well as everyday life. The very air we breathe is itself a heterogeneous gaseous mixture, composed of a more or less fixed amount of nitrogen, oxygen and other gases, combined with an amount of airborne particles (or particulate matter), the exact amount and distribution of which depends on the time of day and where you are in the city. The cleaning agent of water, bleach and detergent used by maintenance when wiping floors and windows is an example of a homogeneous liquid solution, as this solution contains a definite proportion of components which remains constant regardless of the region of the bucket the solution is taken from, assuming of course that we are talking of the solution prepared on that day. Commercial alcohol is also a homogeneous liquid solution, composed, as we all could see from the label, of 70 alcohol and 30 water. Finally, the donuts we eat at work can be said to be a heterogeneous solid solution, composed of homogeneous baked dough, coated in sugar and possibly sprinkled with other things, which are not distributed equally over the entirety of the donut.
Water, as Ive discussed before, exists in one or a combination of three phases in nature, all of which have an effect on the surface of the planet. During wintertime, relatively small bodies of water turn into a solid white crust, thanks to the solidification of the liquid water into ice. The solid ice floats atop warmer water, as a consequence of its lower density compared to the liquid. This property allows for life to thrive under water during winter. The solidification of water to ice also shapes the planets surface via the freeze-thaw cycle, where during cold weather the trapped water in rocks turn to ice, which expands and, occupying more volume than water, pushes the constituents of the rock apart. The ice melts when it gets warmer, then solidifies back in the cold. This cycle tears the rock apart so that in time it is reduced to smaller pieces, which could be blown by the wind, pushed by running water or roll down due to gravity so that the surface features of the planet changes. The vaporization of liquid water to gaseous vapor and into liquid or solid also plays a role in shaping the earth, via the water cycle. The liquid precipitation, in the form of rain, cuts channels through rocks and soil as it flows to rivers, lakes and oceans, causing depressions on the surface that could in time be permanently filled up with water to make new bodies of water. Solid precipitation, like hail, destroys standing structures, clearing the land so that it can be acted on by the elements which could further shape it.
Many examples of homogeneous and heterogeneous mixtures can be found in the workplace, as well as everyday life. The very air we breathe is itself a heterogeneous gaseous mixture, composed of a more or less fixed amount of nitrogen, oxygen and other gases, combined with an amount of airborne particles (or particulate matter), the exact amount and distribution of which depends on the time of day and where you are in the city. The cleaning agent of water, bleach and detergent used by maintenance when wiping floors and windows is an example of a homogeneous liquid solution, as this solution contains a definite proportion of components which remains constant regardless of the region of the bucket the solution is taken from, assuming of course that we are talking of the solution prepared on that day. Commercial alcohol is also a homogeneous liquid solution, composed, as we all could see from the label, of 70 alcohol and 30 water. Finally, the donuts we eat at work can be said to be a heterogeneous solid solution, composed of homogeneous baked dough, coated in sugar and possibly sprinkled with other things, which are not distributed equally over the entirety of the donut.
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