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PROPERTIES OF WATER

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  • CAN BE IN THREE AGGREGATE STATES - LIQUID, GASEOUS, SOLID
  • WITHOUT SMELL, TASTE, COLOR
  • MELTING POINT 0 DEGREES
  • BOILING 100 DEGREES
  • DISTILLED DOES NOT CONDUCT ELECTRICITY
  • THE DENSITY OF ICE IS LESS THAN THAT OF LIQUID WATER

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WATER STRUCTURE

CONSISTS OF TWO HYDROGENS AND ONE OXYGEN ATOM.

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ICE

THE PARTICLES ARE CLOSELY ASSOCIATED WITH EACH OTHER.

AN ICE CUBE CAN KEEP ITS SHAPE FOR A LONG TIME.

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HARD WATER

  • IT IS CAUSED BY CALCIUM AND MAGNESIUM SALTS THAT DISSOLVE IN WATER.
  • WATER HARDNESS CAN BE TEMPORARY OR PERMANENT.
  • HARD WATER CAUSES SCALE TO FORM IN KETTLES OR WATER HEATERS.
  • HARD WATER REDUCES WASHING POWER.
  • THE SOFTEST WATER IS IN TUNDRA LAKES.
  • THE HARDEST WATER IS FOUND IN OCEANS AND SEAS.

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WATER USE

  • SOLVENT
  • HEAT CARRIER
  • COOLER
  • INCLUDED IN THE FINISHED PRODUCT

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1. EXPERIMENT

  • POUR WATER INTO THE TEST TUBE, PUT ON THE BALLOON.
  • HEAT THE TEST TUBE ON AN ALCOHOL LAMP.
  • WATCH THE CHANGES WITH THE BALLOON.

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2. EXPERIMENT

  • WATER IS A SOLVENT. POUR THE SODA AND CITRIC ACID INTO THE TEST TUBE.
  • ADD WATER AS GASES ARE PRODUCED.
  • THE CHEMICAL REACTION TAKES PLACE UNDER THE INFLUENCE OF WATER.

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3. EXPERIMENT

  • TAKE THREE GLASS PLATES.
  • DISTILLED WATER IS DRIPPED ON ONE, DRINKING WATER ON THE SECOND, AND MINERAL WATER ON THE THIRD.
  • EACH PLATE IS HEATED ON AN ALCOHOL LAMP UNTIL A DROP OF WATER EVAPORATES.
  • OBSERVING THE SOLID RESIDUE THAT WAS IN THE WATER. THEY ARE SALT.

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4. EXPERIMENT

  • TAKE THREE TEST TUBES.
  • POUR DISTILLED WATER IN ONE, DRINKING WATER IN THE SECOND AND THIRD.
  • THIRD ADD CALCIUM SALT.
  • ADD 1ML SOAP TO EACH TUBE.
  • CLOSE THE BARS WITH THE CORKS AND SHAKE TO START FOAMING.
  • DISTILLED WATER FOAMS BEST, HARD WATER WORS.

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