L.18.12 Water Properties

Which of these characteristics is NOT a property of water?  

• increases density as it solidifies

• functions as a universal solvent

• exhibits a highly cohesive behavior

• moderates changes in temperature

Which property of water helps to regulate temperature on Earth?

• expansion upon freezing

• polarity of molecules

• surface tension

• specific heat

Which property of water allows it to carry a wide variety of chemicals throughout the human body?

• neutral pH

• universal solvent

• high specific heat

• high surface tension

Which property of water best allows plants to move water from the roots to the leaves?

• exhibits capillary action

• has a high specific heat

• ability to dissolve substances

• ability to form covalent bonds

Which property of water is useful to the human body?

• Water is nonpolar and therefore can be used in many chemical reactions in the body.

• Water is a solvent that helps remove and carry substances throughout the body.

• Water has a pH below 6 and can dissolve food taken in by the body.

• Water is able to freeze within the cells of the body.

Which property of water helps organisms survive in lakes during cold winters?

• Ice forms a crystalline structure with air pockets.

• Ice requires large amounts of heat in order to melt.

• Solid ice is less dense than liquid water, so surface ice insulates the water below.

• Solid ice is white, so it reflects electromagnetic radiation of a range of wavelengths.

Which description identifies a characteristic of water that makes water useful for living organisms?

• Water is polar, allowing it to dissolve many substances.

• Water is able to bond with O₂, allowing water to easily exchange with the atmosphere.

• Water is made of one hydrogen and two oxygen atoms, making it nonpolar.

• Water contains strong bonds, making it difficult to break apart into hydrogen and oxygen atoms.

The ice layers which form on top of Arctic waters protect aquatic life by insulating the water beneath from the extreme cold temperatures. Which property of water contributes to the formation of this ice barrier?

• ability to moderate temperature

• cohesive behavior

• expansion when frozen

• versatility as a solvent

Students in a science classroom observe an insect that appears to be walking on water. The insect is a water strider and it takes advantage of water's unique properties. Which statement below explains the water strider's ability to walk on water?

• The polarity of water molecules are attracted to the legs of the water slider.

• The hydrogen bonds in water cause cohesion and the water strider's legs sit on the bonds.

• Oxygen in water occurs as two bonded atoms and the water strider's legs balance on the molecules.

• The attraction between water molecules creates surface tension and the water strider stands on the molecules.

Which property of water allows the formation of water into drops?

• 
  cohesion

• adhesion

• neutral pH

• specific heat