The building of water that contributes to its capacity to stick to particular surencounters is referred to as __________.

You are watching: Why does h2o have a high boiling point


Explanation:

Water is a polar molecule, and for this reason can adhere to different surfaces; therefore, adhesion is the correct answer right here. Cohesion is cshed, as cohesion describes the capability of water to stick to itself as a result of its polarity. We want the residential or commercial property that enables water to stick to other surfaces, not to itself. Polymerization entails chains of equivalent molecules, and does not happen in water. Parsimony is the principle that the most basic explanation is typically the truth of a case (such as once tracing evolutionary histories). Gravity does not play into the properties of water.


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Example Inquiry #1 : Ap Biology


Water"s ability to create intermolecular hydrogen bonds outcomes in its inability to break up which of the complying with compounds?


Possible Answers:

Ions


Lipids


Sugars


Amino acids


Correct answer:

Lipids


Explanation:

Nonpolar compounds will not be adequately liquified in aqueous remedies. Lipids are nonpolar compounds that are greatly insoluble in water. This reasons lipids to congregate together, quite than be broken acomponent in aqueous services. Lipids will certainly mainly come together to develop globs or balls referred to as micelles.

Ions, amino acids, and also sugars (carbohydrates) are all polar, and will certainly be adequately dissolved and also ionized by water.


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Example Inquiry #2 : Ap Biology


What building of water permits it to have actually a very high boiling point?


Possible Answers:

Amphoteric nature


Salt formation


Autoionization


Hydrogen bonding


Van der Waals forces


Correct answer:

Hydrogen bonding


Explanation:

Water has actually an uncommonly high boiling suggest for a liquid. This is pertained to the intermolecular pressures between water molecules; once a liquid has especially big intermolecular pressures, it will have actually a higher boiling allude. Large intermolecular pressures between molecules will certainly favor the liquid state over the gaseous state.

Water is made up of oxygen and also hydrogen and also deserve to develop hydrogen bonds, which are particularly strong intermolecular forces. These solid intermolecular forces cause the water molecules to "stick" to one an additional and also stand up to change to the gaseous phase.


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Example Concern #1 : Ap Biology


Which of the complying with intermolecular interactions is simplest to disrupt via a readjust in temperature?


Possible Answers:

Ionic bonds 


Covalent bonds 


Hydrogen bonds 


Peptide bonds 


Correct answer:

Hydrogen bonds 


Explanation:

Hydrogen bonding have the right to quickly be disrupted by alters in temperature. It is crucial to note that hydrogen bonding is not a true example of a chemical bond, however quite an intermolecular pressure. Hydrogen bonds are necessary for the formation of protein structure and DNA base pairing. When proteins and DNA are exposed to warm, they degrade as these hydrogen bonds are broken.

Covalent bonds, which encompass peptide bonds, and ionic bonds are examples of actual chemical bonds that call for high quantities of energy prior to they can be conveniently disrupted. These bonds are considered even more irreversible interactions than other intermolecular pressures.


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Example Inquiry #1 : Ap Biology


In reference to water, what to execute cohesion, surconfront stress, and also adhesion all have actually in common?


Possible Answers:

All are developed by ionic bonding


All are properties concerned hydrogen bonding


All are outcomes of the framework of hydrogen atoms


All are aspects of a crystalline structure


All are developed by covalent bonding


Correct answer:

All are properties regarded hydrogen bonding


Explanation:

These properties of water are all an outcome of hydrogen bonding. Hydrogen bonds result from the electric attraction between partially positive hydrogen atoms and also partly negative oxygen atoms of adjacent water molecules. The differences in electronegativity in between hydrogen and oxygen offer climb to the hydrogen bonding and associated properties.

Attractivity and polarity in water molecules cause them to "stick" to one another. Attraction between water molecules outcomes in cohesion, and attractivity between the water molecules and other compounds in the atmosphere outcomes in adhesion. The high surchallenge stress of water is led to by the "sticking" of water molecules to one an additional, which store vapor pressure low.

Hydrogen bonding is a short-lived intermolecular pressure, and also is different from covalent or ionic bonding. Covalent and ionic bonding cause permanently joined atoms to build molecular frameworks.


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Example Concern #1 : Understanding Essential Properties Of Water


It is a hot summer day. When you clutch a cold glass of water, just how is warm power transferred?


Possible Answers:

From the glass to your hand also by conduction


From the air to your hand by convection


From the glass to your hand by radiation


From your hand to the glass by radiation


From your hand to the glass by conduction


Correct answer:

From your hand to the glass by conduction


Explanation:

Tright here are three creates of heat transfer: radiation, convection, and conduction. Radiation is the transfer of heat by means of electromagnetic waves, such as sunlight of microwaves. Convection is the move of heat with a liquid tool, such as water or air curleas. Conduction is the direct transfer of warmth between settings with physical call. Due to the fact that your hand also is in physical contact via the glass, warm is moved by conduction.

Heat is always transferred from a body of better temperature to a body of lower temperature. Due to the fact that your hand is warmer than the glass, heat is moved from the hand to the glass. It have the right to be much easier to think of warmth transport in terms of concentration. Like molecules, heat energy will take a trip from an area of high concentration (hotter) to a region of low concentration (colder) in order to reach equilibrium.


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Example Question #1 : Biochemical Concepts


Water often travels between cells and also the atmosphere via osmosis, wright here it diffoffers from locations via low solute concentration (wright here more water is present) to areas through better solute concentration (wbelow there is relatively less water). Which answer alternative is an instance of osmosis?


Possible Answers:

A cell is put in an isotonic environment and also instantly loses a great deal of its water content to its surroundings


A normal cell is inserted in pure water; water from the environment flows into the cell and causes it to swell


A normal cell is put in pure water; water from the cell flows out into the surrounding liquid and also reasons the cell to shrink


A cell is put in a hypertonic environment; water flows right into the cell and also causes it to swell


Correct answer:

A normal cell is placed in pure water; water from the setting flows right into the cell and also causes it to swell


Explanation:

To pick the correct answer, you must understand the distinction in between hypertonic, hypotonic, and isotonic. A hypertonic solution, such as sea water through a high salt content, contains even more solute than a normal cell. Water will flow out of the cell and into the environment in an attempt to equalize the amount of solute in the two "compartments." An isotonic solution has the exact same loved one amount of solute as the cell to which it is being compared, so no concentration gradient exists and no net diffusion will take place. Finally, a hypotonic solution includes less solute than the cell also which it is being compared.

Pure water will certainly constantly have less solute concentration than a cell, developing a hypotonic connection. The solution is hypotonic to the cell (less solute) and the cell is hypertonic to the water (more solute). Water will circulation from the hypotonic environment to the hypertonic cell, bring about it to swell in dimension.


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Example Inquiry #2 : Ap Biology


What reasons water"s high warmth capacity?


Possible Answers:

Cohesion


Low boiling point


Low density as a solid


Adhesion


Correct answer:

Cohesion


Explanation:

Cohesion is the result of boosted stamina of hydrogen bonding between many type of water molecules. This boosted toughness requires a great amount of heat in order to break the hydrogen bonds between molecules, in order for these molecules to end up being vapor. Cohesion and hydrogen bonding are the cause for water"s low vapor pressure, high boiling suggest, and also high heat capacity.

Adhesion is water"s building to adbelow to a surconfront, and is the reason of capillary activity. Water does have low thickness as a solid, which allows ice to float, but is not the reason for water"s high warmth capacity. Water has actually a high boiling suggest, considering its low mass.


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Example Question #6 : Ap Biology


Which phase of water in the a lot of dense?


Possible Answers:

Water has the same thickness in any type of of its phases


Gas


Superinstrumental fluid


Liquid


Solid


Correct answer:

Liquid


Explanation:

Water, unchoose many other compounds, has several one-of-a-kind properties because of its hydrogen bonding in between molecules. The hydrogen bonds are relatively solid, leading water to have actually extremely low vapor push and also high surchallenge anxiety. A side effect of the hydrogen bonding, however, is that as soon as water crystallizes, the molecules will inevitably align so that the hydrogen bonds are kept. The solid lattice structure of water molecules is, thus, not exceptionally tightly packed. The framework is ideal to optimize intermolecular pressures, fairly than area and volume. The density of the solid (ice) is hence much less than the thickness of the liquid water.

Water vapor (gas) and superimportant water both have lower densities than ice, making liquid water the most thick.


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Example Question #3 : Ap Biology


What residential or commercial property of water enables it to have an unusually high boiling point?


Possible Answers:

It includes oxygen


It has actually a low molecular weight


It is a tiny molecule that can pack tightly


It is in a bent shape


It have the right to develop hydrogen bonds


Correct answer:

It can create hydrogen bonds


Explanation:

Boiling suggest is generally figured out by a couple of factors that are directly concerned molecular weight and also intermolecular pressures. In basic, lighter molecules have actually reduced boiling points and also molecules through stronger intermolecular pressures have actually better boiling points.

Water is relatively light, however has actually exceptionally strong hydrogen bonding. Hydrogen bonding is the strongest intermolecular force and also will certainly act to pull water molecules closer to each other. The outcome is a dense liquid that does not quickly transition right into a less thick gas. In order for water to boil these intermolecular hydrogen bonds must be broken, which takes energy. A higher energy input indicates a greater boiling point.

The form and also composition of water are not particularly appropriate to its boiling point, and being a small, light molecule would be conducive to a low boiling suggest fairly than a high boiling point.

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