Question | Answer |
Which end of a water molecule has a slightly positive charge? | hydrogen end
|
What term refers to a molecule that shares its electrons unequally? | polar
| Which unique property of water allows it to regulate temperature? | high specific heat
| What term refers to a substance, like water, that can dissolve many different types of materials? | universal solvent
| What two processes increase the amount of freshwater entering the ocean and therefore decreases salinity? | precipitation and runoff
| What type of intermolecular bond forms between two or more molecules of water? | hydrogen
| What happens to the density of water when it freezes into a solid? | the density decreases
| What happens to the density of water as its temperature decreases? | the density increases
| What is the average salinity of the ocean? | 35 ppt
| What type of bond holds the atoms of hydrogen and oxygen together in an individual water molecule? | covalent
| What term refers to water's ability to stick to other substances? | adhesion
| What process increases the salinity of the ocean? | evaporation
| At 32F or 0C, will seawater freeze?Explain your answer. | No, because sea water has a lower freezing point than pure, freshwater
| What term refers to the thickness of a fluid or a fluid's tendency to resist flow? | viscosity
| What term refers to water's ability to stick to other water molecules? | cohesion
| Why does the oxygen end of a water molecule have a slightly negative charge? | because it is larger and pulls the negatively charge electrons toward its end of the water molecule
| What term refers to the film-like quality on the surface of a liquid produced by cohesion? | surface tension
| What are the three phases (states) of water? | ice(solid), water(liquid), water vapor(gas)
| How many hydrogen bonds can an individual molecule form at a single time? | 4
| What two types of compounds will dissolve in water? | ionic and polar covalent |