9685808
Descripción
Test por Christine Davis - IU8, actualizado hace más de 1 año
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Creado por Christine Davis - IU8
hace más de 7 años
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Pregunta 1
Pregunta
Which of the following makes up a molecule of water?
Respuesta
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One atom of hydrogen and one atom of oxygen
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One atom of hydrogen and one atom of sodium
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Two atoms of hydrogen and two atoms of oxygen
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Two atoms of hydrogen and one atom of oxygen
Pregunta 2
Pregunta
Most of water's properties occur because it is:
Respuesta
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A polar covalent bonded molecule
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Made with oxygen
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A polar ionic
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Makes up 75% of the earth
Pregunta 3
Pregunta
Hydrogen bonds take place between the …
Respuesta
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hydrogens of the water molecules
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oxygen and oxygen of the water molecules
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oxygen on one water molecule and the hydrogen of the other water molecule
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oxygen and hydrogen of the same molecule
Pregunta 4
Pregunta
Which property of water is responsible for the variety of aquatic organisms throughout the various seasons?
Respuesta
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adhesion
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cohesion
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High specific heat
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Solid water is less dense than liquid water
Pregunta 5
Pregunta
Nuclear reactors can run into problems if the reactor and fuel rods get too hot. They will use water as a coolant to keep the reactor core at a proper temperature. What property of water is this demonstrating?
Respuesta
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Cohesion
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high specific heat
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universal solvent
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adhesion
Pregunta 6
Pregunta
A polar bond is created by unequally shared electrons. Nonpolar bonds are equally shared electrons. Which statement best explains why water will dissolve polar compounds and NOT non polar compounds?
Respuesta
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Polar compounds are charged molecules with + and – ends. These charged areas will attract other charged areas of other molecules.
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Polar and nonpolar are opposite molecules. Opposite molecules will dissolve opposites.
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Polar molecules are like ice, they are very cold; nonpolar are warm
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Ionic are the best to be dissolved because they have opposite charges.
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