Water
Water, the common name applied to the liquid state of the hydrogen-oxygen compound H2O, is an odorless, tasteless liquid. It consists of millions of tiny particles called molecules. Each molecule consists of even smaller particles called atoms. Water molecules consist of atoms of hydrogen and oxygen. Hydrogen and oxygen by themselves are gases. However, when two atoms of hydrogen combine with one atom of oxygen, they form the chemical compound H2O, water. Under standard atmospheric pressure, 760 mm of mercury, the freezing point of water is 0° C (32° F) and its boiling point is 100° C (212° F). Depending on its temperature, water can occur in either three states of matter: solid, liquid, or gas. As a solid, or ice, it can be found as snow or hail. It occurs in the liquid state as rain; in addition, it covers three-quarters of the surface of the earth in different forms such as lakes, rivers, and oceans. It appears as fog and steam in the gaseous state (water vapor). The molecules that mak
Nonetheless, these bonds can be broken, and the liquid state of water can change to a gaseous one. When water is boiled evaporation takes place. Evaporation is a gradual change from liquid to gas. A liquid is composed of molecules traveling at different speeds in constant motion. The average speed of these particles depends on the liquid's temperature. If the particles have enough energy produced by temperature, fast-moving particles hitting other particles near the liquid's surface may have enough speed to cause the surface particle to leave the liquid and become gaseous. The higher the temperature of the water, the faster it evaporates, because the water molecules move faster. When boiled, water turns into vapor and creates steam. It takes an enormous amount of heat to produce steam. Water boils at 100° C (212° F). However, when water reaches the boiling point, it does not immediately turn into steam. First there is a period in which the water absorbs additional heat without any rise
Some common words found in the essay are:
, water molecules, hydrogen bonds, 100° 212°, chemical reactions, temperature water, atoms hydrogen, positively charged, hydrogen oxygen, liquid water, negatively charged,
Approximate Word count = 677
Approximate Pages = 3 (250 words per page double spaced)
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