7.1- Introduction to water review

What makes water a unique liquid?

• Water behaves differently from other liquids due to its polarity. Water expands as a solid, has a neutral pH, and has a high specific heat.

• Water is the only liquid that cannot dissolve any substances.

• Water is always acidic in nature and contracts when frozen.

• Water has a low specific heat and is non-polar.

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How does the shape of a water molecule cause water to bond to itself?

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Label the charges on the water molecule.

a

b

Positive

Negative

How are cohesion and adhesion alike and different? (Refer to the Venn diagram)

• Cohesion: water attracted to other water molecules. Adhesion: water attracted to other substances. Both are attractive tendencies.

• Cohesion: water repels other water molecules. Adhesion: water repels other substances. Both are repulsive tendencies.

• Cohesion: water attracted to air molecules. Adhesion: water attracted to oil molecules. Both are non-attractive tendencies.

• Cohesion: water attracted to other substances. Adhesion: water attracted to other water molecules. Both are unrelated tendencies.

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How is water stored and moved through the hydrologic cycle? (Refer to the diagram)

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Define: Transpiration.

• water vapor leaving plant leaves

• sunlight absorbed by roots

• carbon dioxide entering the stem

• minerals moving from soil to fruit

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Define: Condensation.

• water vapor turning back into liquid

• liquid water turning into vapor

• ice melting into water

• rainwater soaking into the ground

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Define: Precipitation.

• water released from clouds in various forms

• the process of water turning into vapor

• the movement of water underground

• the absorption of water by plants

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Define: Evaporation.

• water changing from liquid to gas

• water changing from gas to solid

• water changing from solid to liquid

• water changing from gas to liquid

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Define: Infiltration.

• water on the ground seeping into the soil

• water evaporating from the surface

• clouds forming in the sky

• plants absorbing water through roots

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