Silver Burdett/

Science: Understanding Your Environment/

Water the Great Solvent p. 61/

1975/

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S4N6/

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/-/Did you ever try*D1I to make=IDO041 something disappear?=IDO020 /-/[ALIf you drop*D1 a sugar cube (into warm water, )]it will soon disappear.*- /c/But what really happens*- (to the sugar? )/-/Has it been destroyed?*P /-/Can you get*D1 it back again? /-/[ALWhen you dissolve*D1 sugar (in water, )]the mixture is called*P1 a solution suhLOOshun.=APR01 /-/The water is called*P1 the solvent SOLvunt.=APR01 /-/The sugar molecules separate*- and mix*- (with the water molecules. )/-/Nearly all substances dissolve*- (in water. )/-/Ink, food coloring, some medicines, and table salt are*N1 examples. /-/(In fact, )water is*N1 probably the best solvent (on earth. )/-/Some materials dissolve*- (in water )(in great amounts. )/c/But others dissolve*- so little [ARthat the amounts can hardly be measured.*P ]/-/Many kinds (of dirt )dissolve*P (in water. )/-/The industries (in this country )use*D1 billions (of gallons )(of water )every day.=U--02 /-/Factories are usually built*P [ARwhere there is*N1 much water. ]/-/Water is used*P to wash=IAV031 materials. /-/Water is changed*P (into steam )to run engines.=IAV031 /-/It is used*P to carry=IAV041 away wastes. /-/It is*N1 a raw material (for many products. )/-/What other uses (of water )can you name?*D1 /-/Running=P--01 water is used*P to produce=IAV031 electricity. /-/The electricity is used*P (in many different ways )(in factories. )/-/Use*D1 a map to find=IAV105 New York, Chicago, Los Angeles, Philadelphia, and Deroit. /-/These are*N1 the five largest cities (in the United States. )/-/Look at*D1 the map. /-/What are*N1 the major sources (of water )(for these cities? )/-/How much water do you drink*D1 each day?=U--02 /-/How much water is*-1P (in the food )[JRyou eat?*D0 ]!!!!!!!!