Water, Ch 6: Question Preview (ID: 2750)

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If ice did not float, Earth would have a different climate
a) True b) False c) d)
Modern methods of measuring salinity of sea water depends on the rule of constant proportions because only chlorinity is measured
a) True b) False c) d)
Proportions of organic elements are found in constant proportion just like sea salts are found in constant proportions
a) True b) False c) d)
Changes in salinity can cause osmotic pressure between cells and the environment
a) True b) False c) d)
What is a polar molecule
a) a molecular combiination found only in freezing conditions b) a m olecule with a configuration that causes it to have a positively charged end and a negatively charged end c) d)
Properties of water that are possible because water is a polar molecule include
a) being liquid at room temperature, surface tension, ice that floats b) the ability to evaporate and reduce resistance to flow c) d)
What is a solultion
a) a combinatiiion of 2 or more substances that intermingle but retain their individual properties b) a combinatiiion of 2 or more substances in which the molecules of one substance are evenly dispersed among the molecules of t c) d)
What is salinity
a) all the inorganic dissolved solids in sea water b) the sodium chloride portion of the non organice solids in sea water c) d)
Colligative properties of sea water
a) characteristics caused by dissolved solids in sea water b) characteristics that both fresh and sea water have in common c) d)
What is the principle of constant proportions
a) salinity is constantly proportional to temperature b) regardless of salinity, the proportion of the inorganic dissolved solids remainns the same relative to eachother c) d)
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