How do the properties of water help our oceans to remain in liquid form? What will be an ideal response?
ANS:Answer
should include:
? Water's polarity allows it to form hydrogen bonds with other charged molecules. The
partially positive hydrogen atoms attract to the partially negative oxygen atoms of other
water molecules. The tendency of water to stick to other water molecules is called
cohesion. This property creates a "skin" on the surface called surface tension.
? Water also has a propensity to stick to other solids as well. This is called adhesion.
When water molecules begin to attach to other molecules, it can affect the amount of
energy is needed for a phase change.
? The hydrogen bonds add strength to eater remaining in liquid form. It takes additional
energy to change phases. There needs to be an addition of 540 calories per gram of heat
energy in order for liquid water to become water vapor. There is an 80 calorie per gram
difference between ice and liquid water.
? Water's high heat capacity is a fundamental part of it remaining in liquid form as well. It
takes a relatively large amount of energy to raise the temperature of one gram of water
by 1? Celsius.
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Organisms are composed of simple monomers
Indicate whether the statement is true or false