“The Polarity the Water” a water molecule is join to 4 other water molecule by hydrogen bonds.
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a.two … polar covalentb.two … hydrogen—c.four … hydrogend.four … polar covalente.three … ionic
The unequal sharing of electrons within a water molecule provides the water molecule _____.
The electrons spend more time through the oxygen the the water molecule than through the hydrogens that water. Thus, the oxygen has actually a net an adverse charge and also the hydrogens have a net hopeful charge.
a.have a low surface tensionb.change conveniently from a liquid to gas formc.ionicd.polar—e.hydrophobic
C. Hydrogen Bonds room weaker than covalent bonds due to the fact that they do not involve sharing of electrons, and they are weaker 보다 ionic bonds since they indicate the attraction of partial (not full) the contrary charges.
a.The insect is swimming.b.The insect is paris just above the water c.surface.d.Surface tension.—e.The insect is an extremely light.f.It is daunting to readjust the temperature that water.
a. Water molecules lure to every otherb. A autumn of water spilled on a table creates a drop on the table, rather than dispersing out over the surface
a. A water stride runs throughout a pond without breaking surfaceb. A sewing needle floats when it is inserted gently on optimal of water in a bucket
Carbonated cola is more acidic 보다 coffee or also orange juice because cola consists of phosphoric acid.What is the molar concentration the
(a) one mole that solute every liter of solution.—-(b) one mole that solute per liter of water.(c) a one-to-one ratio of solute to solvent molecules.Both (b) and also (c).None of the above.
Which statement need to be mentioned in explaining why amphipathic molecules line up at a water surface?
a.Nonpolar teams repel water.b.Polar groups attract one another.—c.Polar groups repel water.d.Nonpolar groups attract one another.e.All that the above.
a.molecules breaking into ions.b.a separation that molecules right into neutral atoms.c.breaking covalent bonds.d.a change from a solid to a liquid.e.a mingling of molecule and/or ions. —
Water is a resource of ______________ because that chemical reactions in cells.Water is a resource of ______________ for chemical reaction in cells.Many reaction incorporate O and also H native water into biological molecules. This happens when you digest starch and also protein, because that example.
Which statement is true the water’s tensile strength?Which explain is true of water’s tensile strength?Because of hydrogen bonding, water coheres to itself and also adheres to cabinet walls. That makes it feasible to pull water v plants without breaking the water column.
(a) It outcomes from hydrogen bonding.(b) It helps to pull water v plants.(c) It requires both cohesion and adhesion.Both (a) and also (b).(a), (b), and (c). —
Water has actually surface tension because …
The hydrogen bonds in between surface water molecule are normally slightly stretched. Favor a extended sheet of rubber, the surface ar tends to contract and resists being penetrated.
a. Water often tends to evaporate from the surface.b.hydrogen bonds in between surface water molecules stand up to being stretched.c.cohesion pressures are weaker in ~ the surface.d.there is positive pressure within the water mass.e.molecules at the surface ar make more hydrogen bonds.
Which of the complying with helps many to describe why water has actually a high specific heat?Which the the following helps many to define why water has a high particular heat?When you warmth water, lot of the warm is used to rest hydrogen bonds. Just the remaining heat can increase molecular motion, raising the temperature.
(a) A water molecule can make 4 hydrogen bonds.—(b) The water molecule has exceptionally strong covalent bonds.(c) Water temperature is exceptionally perceptible to heat.Both (a) and also (b).Both (b) and (c).
Which element is crucial in making it possible to cool yourself by sweating? Think carefully!
Random collisions allow some molecules to accumulate an ext energy than various other molecules. The weakness of hydrogen bonds allows those molecule escape, leaving the cooler molecules behind.
(a) molecule collide through varied angles and also speeds.(b) Hydrogen bond are relatively weak.(c) Water has more energy at the human body surface.Both (a) and (b).(a), (b), and (c).—
Though you include heat, the temperature of boil water remains constant because …
At boiling, every the added heat is provided to break hydrogen bonds. Totally free of the water mass, the departing heavy steam carries away all the included energy, with none left over to advanced the temperature.
a.It takes energy to circulate water.b.Water has a continuous boiling temperature.c.It takes energy to rest covalent bonds.d.It takes energy to break hydrogen bonds.—e.None of the above. The temperature rises throughout boiling.
Which statement helps to describe why ice is less thick than liquid water?
The ice cream lattice has open spaces because of the angle at i beg your pardon hydrogen bond form. Heat energy can rest water molecules complimentary of the lattice for this reason they move right into the openings.
(a) Water molecules make hydrogen bonds at identify angles.(b) Cold molecules move much less than heat molecules.(c) Hydrogen bonds lengthen in the cold.All the the above.Both (a) and (b). —
The open spaces in water’s crystal structure make it possible for …The open spaces in water’s crystal framework make it feasible for …
(a) aquatic life to exist in ~ the north Pole.—(b) water to have actually a short boiling point.(c) life to occur in hot springs.Both (b) and also (c).(a), (b), and (c).
Why doesn’t oil mix through water?
Water molecules cling to one another and also won’t part to do room because that uncharged (nonpolar) molecules. There’s no repulsion.
(a) Nonpolar molecule repel water molecules.(b) Polar molecule repel nonpolar molecules.(c) Polar molecules entice one another.—(d) Nonpolar molecules lure one another.Both (a) and also (d).
Which building of water permits dogs come cool themselves by panting?Which building of water allows dogs to cool themselves by panting?Evaporative cooling takes location when molecules through the greatest kinetic energy leave a liquid as gas molecules. Due to the fact that of water’s high warmth of vaporization, a huge amount of heat must be took in for 1 gram the water come be converted from fluid to gas. The dog loser this warm as the water top top its tongue evaporates, allowing him to cool down by panting. To understand why this price is correct, read around evaporative cooling.
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a.water’s high heat of vaporizationb.the formation of covalent bonds in between water moleculesc.water’s high surface tension
Which residential property of water permits a file towel to pick up a puddle of water?
Water adheres come the cellulose molecules in a paper towel, enabling the bath towel to pick up a puddle of water. This is comparable to the adhesion between water molecules and cellulose in cell walls responsible because that water transfer in plants.
a.water’s high surface tensionb.water’s high heat of vaporizationc.adhesion the water molecules to various other kinds the molecules—
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