The residential property of water the contributes come its capacity to pole to particular surfaces is referred to as __________.

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


Explanation:

Water is a polar molecule, and also thus can adhere to various surfaces; thus, adhesion is the correct answer here. Cohesion is close, together cohesion describes the capability of water come stick to itself as result of its polarity. We desire the property that allows water come stick to other surfaces, not to itself. Polymerization involves chains of similar molecules, and does not happen in water. Parsimony is the principle the the most basic explanation is typically the truth of a situation (such as when tracing evolutionary histories). Heaviness does not play right into the properties of water.


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Example inquiry #1 : Ap biologic


Water"s capability to create intermolecular hydrogen bonds outcomes in its inability to rest up which of the adhering to compounds?


Possible Answers:

Ions


Lipids


Amino acids


Sugars


Correct answer:

Lipids


Explanation:

Nonpolar compounds will not it is in adequately dissolved in aqueous solutions. Lipids room nonpolar compounds the are largely insoluble in water. This causes lipids to congregate together, fairly than be damaged apart in aqueous solutions. Lipids will typically come with each other to form globs or balls called micelles.

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


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Example concern #1 : Ap biology


What property of water permits it to have actually a an extremely high boiling point?


Possible Answers:

Amphoteric nature


Van der Waals forces


Salt formation


Hydrogen bonding


Autoionization


Correct answer:

Hydrogen bonding


Explanation:

Water has an unusually high boiling allude for a liquid. This is pertained to the intermolecular forces in between water molecules; when a liquid has actually particularly huge intermolecular forces, it will have a higher boiling point. Big intermolecular forces in between molecules will favor the fluid state end the gas state.

Water is comprised of oxygen and hydrogen and also can type hydrogen bonds, which are specifically strong intermolecular forces. These solid intermolecular forces cause the water molecules to "stick" to one another and resist transition to the gas phase.


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Example concern #1 : Ap biology


Which that the following intermolecular interactions is easiest to disrupt via a readjust in temperature?


Possible Answers:

Hydrogen bonds 


Peptide bonds 


Covalent bonds 


Ionic bonds 


Correct answer:

Hydrogen bonds 


Explanation:

Hydrogen bonding can conveniently be disrupted by alters in temperature. That is necessary to keep in mind that hydrogen bonding is no a true instance of a chemical bond, but rather an intermolecular force. Hydrogen binding are important for the development of protein structure and DNA basic pairing. As soon as proteins and also DNA room exposed come heat, they degrade together these hydrogen bonds space broken.

Covalent bonds, which encompass peptide bonds, and also ionic binding are instances of real chemical bond that need high quantities of energy before they can be easily disrupted. This bonds are considered more permanent interaction than various other intermolecular forces.


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Example concern #1 : Understanding important Properties that Water


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


Possible Answers:

All are created by covalent bonding


All are created by ionic bonding


All room properties related to hydrogen bonding


All are elements of a crystalline structure


All are outcomes of the structure of hydrogen atoms


Correct answer:

All space properties regarded hydrogen bonding


Explanation:

These nature of water room all a result of hydrogen bonding. Hydrogen bonds result from the electrical attraction between partially confident hydrogen atoms and also partially an unfavorable oxygen atoms of adjacent water molecules. The distinctions in electronegativity between hydrogen and oxygen provide rise to the hydrogen bonding and associated properties.

Attraction and polarity in water molecules reason them come "stick" to one another. Attraction between water molecules results in cohesion, and also attraction in between the water molecules and also other compound in the environment results in adhesion. The high surface tension of water is caused by the "sticking" the water molecule to one another, which store vapor press low.

Hydrogen bonding is a momentary intermolecular force, and also is various from covalent or ionic bonding. Covalent and also ionic bonding result in permanently joined atoms to build molecular structures.


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Example inquiry #2 : Understanding necessary Properties that Water


It is a hot summer day. When you clutch a cold glass the water, how is heat energy transferred?


Possible Answers:

From your hand come the glass through radiation


From your hand to the glass through conduction


From the glass to her hand through conduction


From the waiting to your hand by convection


From the glass to your hand through radiation


Correct answer:

From your hand to the glass by conduction


Explanation:

There room three develops of warmth transfer: radiation, convection, and also conduction. Radiation is the move of warmth via electromagnetic waves, such as sunlight of microwaves. Convection is the deliver of warmth through a liquid medium, such together water or wait currents. Conduction is the direct transfer that heat between environments through physical contact. Since your hand is in physical call with the glass, warmth is transferred by conduction.

Heat is always transferred from a body of greater temperature come a body of reduced temperature. Due to the fact that your hand is warmer 보다 the glass, warm is moved from the hand to the glass. It can be simpler to think of heat transfer in regards to concentration. Choose molecules, heat energy will travel from a an ar of high concentration (hotter) come a an ar of low concentration (colder) in stimulate to with equilibrium.


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Example question #7 : Ap biology


Water regularly travels between cells and the setting via osmosis, where it diffuses from locations with short solute concentration (where more water is present) to areas with higher solute concentration (where there is fairly less water). I m sorry answer choice is an example of osmosis?


Possible Answers:

A normal cell is inserted in pure water; water from the cabinet flows out into the neighboring liquid and causes the cabinet to shrink


A regular cell is put in pure water; water indigenous the environment flows right into the cell and causes it come swell


A cell is inserted in one isotonic environment and also immediately loses a an excellent deal the its water contents to that surroundings


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


Correct answer:

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


Explanation:

To choose the correct answer, friend must understand the difference in between hypertonic, hypotonic, and also isotonic. A hypertonic solution, together as ocean water with a high salt content, contains an ext solute 보다 a typical cell. Water will circulation out of the cell and into the setting in an effort to equalize the lot of solute in the 2 "compartments." an isotonic solution has the same loved one amount of solute together the cell to which it is gift compared, so no concentration gradient exists and also no network diffusion will occur. Finally, a hypotonic solution has less solute 보다 the cell as well which that is being compared.

Pure water will always have much less solute concentration than a cell, creating a hypotonic relationship. The equipment is hypotonic to the cabinet (less solute) and the cabinet is hypertonic to the water (more solute). Water will flow from the hypotonic environment to the hypertonic cell, leading to it come swell in size.


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Example concern #1 : Biochemical principles


What reasons water"s high heat capacity?


Possible Answers:

Cohesion


Low density as a solid


Adhesion


Low cook point


Correct answer:

Cohesion


Explanation:

Cohesion is the an outcome of enhanced strength of hydrogen bonding in between many water molecules. This enhanced strength needs a great amount of warm in bespeak to rest the hydrogen bonds in between molecules, in order because that these molecule to end up being vapor. Cohesion and hydrogen bonding room the cause for water"s short vapor pressure, high boil point, and also high warmth capacity.

Adhesion is water"s property to adhere to a surface, and is the cause of capillary action. Water does have actually low density as a solid, which allows ice come float, yet is not the reason for water"s high warmth capacity. Water has a high cook point, considering its short mass.


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Example question #9 : Ap biology


Which step of water in the many dense?


Possible Answers:

Gas


Supercritical fluid


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


Liquid


Solid


Correct answer:

Liquid


Explanation:

Water, unlike many other compounds, has actually several unique properties as result of its hydrogen bonding in between molecules. The hydrogen binding are relatively strong, leading water to have an extremely low vapor pressure and also high surface ar tension. A side result of the hydrogen bonding, however, is that when water crystallizes, the molecules will inevitably align so that the hydrogen bonds space maintained. The heavy lattice framework of water molecule is, thus, not really tightly packed. The structure is ideal to optimize intermolecular forces, quite than an are and volume. The density of the solid (ice) is for this reason less 보다 the density of the liquid water.

Water vapor (gas) and also supercritical water both have actually lower densities than ice, making liquid water the most dense.


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Example question #10 : Ap biology


What residential or commercial property of water allows it to have an uncommonly high boil point?


Possible Answers:

It contains oxygen


It is in a bending shape


It can form hydrogen bonds


It has actually a short molecular weight


It is a tiny molecule that can pack tightly


Correct answer:

It can type hydrogen bonds


Explanation:

Boiling suggest is generally figured out by a couple of factors the are directly related to molecular weight and also intermolecular forces. In general, lighter molecules have lower boiling points and molecules with stronger intermolecular pressures have greater boiling points.

Water is relatively light, yet has very solid hydrogen bonding. Hydrogen bonding is the strongest intermolecular force and will act to traction water molecules closer to each other. The result is a dense liquid the does no easily transition into a less thick gas. In order for water to boil these intermolecular hydrogen bonds should be broken, which takes energy. A greater power input means a higher boiling point.

The shape and composition of water room not particularly relevant come its boiling point, and being a small, irradiate molecule would certainly be conducive to a short boiling suggest rather than a high cook point.


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