Chlorine gas is greenish yellow in appearance. The word “chlorine” comes from the Greek word “chloros,” meaning greenish yellow. This element is a halogen belonging to group 17 on the periodic table. Its chemical symbol ... More »

Chlorine is a pale green-yellow gas, according to Its name is derived from the Greek word "khloros," which means "greenish-yellow." Chlorine has an atomic number of 17 and atomic weight of 35.4527. Its symbol ... More »

The phase of chlorine is dependent upon temperature and pressure, but it is a gas at room temperature and standard pressure. At standard pressure, chlorine liquefies at minus 29.15 degrees Fahrenheit and freezes at minus... More »

Although neon lights and signs are seen glowing in a wide variety of colors, the actual color emitted by pure neon gas when electrified is a bright orange-red color. The additional colors created by what became known as ... More »

Harper College explains that forming a precipitate, color changes, gas formation and temperature change are signs of a chemical change. The University of California, Davis adds that the presence of odor also indicates a ... More »

A haloform reaction is a chemical reaction during which a methyl ketone is halogenated by chlorine, bromine or iodine in the presence of a base to form a haloform. A haloform is an alkyl halide. More » Science Chemistry

The main elements in plastic include carbon, oxygen, hydrogen and chlorine. Some plastics may also contain sulfur, depending on how they are made. More »