“The Polarity of Water” a water molecule is joined to four other water molecules by hydrogen bonds.
You are watching: The unequal sharing of electrons within a water molecule makes the water molecule
a.two … polar covalentb.two … hydrogen—c.4 … hydrogend.four … polar covalente.three … ionic
The unequal sharing of electrons within a water molecule provides the water molecule _____.
The electrons spend even more time through the oxygen of the water molecule than through the hydrogens of water. Hence, the oxygen has actually a net negative charge and also the hydrogens have a net positive charge.
a.have a low surface tensionb.adjust conveniently from a liquid to gaseous formc.ionicd.polar—e.hydrophobic
C. Hydrogen Bonds are weaker than covalent bonds bereason they carry out not involve sharing of electrons, and they are weaker than ionic bonds because they involve the attraction of partial (not full) oppowebsite charges.
a.The insect is swimming.b.The insect is flying just over the water c.surchallenge.d.Surconfront anxiety.—e.The insect is exceptionally light.f.It is tough to adjust the temperature of water.
a. Water molecules attract to each otherb. A drop of water spilled on a table forms a drop on the table, rather than spanalysis out over the surface
a. A water stride runs throughout a pond without breaking surfaceb. A sewing needle floats as soon as it is placed gently on optimal of water in a bucket
Carbonated cola is even more acidic than coffee or even oselection juice because cola contains phosphoric acid.What is the molar concentration of
(a) one mole of solute per liter of solution.—-(b) one mole of solute per liter of water.(c) a one-to-one ratio of solute to solvent molecules.Both (b) and also (c).Namong the over.
Which statement need to be discussed in explaining why amphipathic molecules line up at a water surface?
a.Nonpolar teams repel water.b.Polar teams attract one an additional.—c.Polar groups repel water.d.Nonpolar teams lure one one more.e.All of the above.
a.molecules breaking right into ions.b.a separation of molecules right into neutral atoms.c.breaking covalent bonds.d.a readjust from a solid to a liquid.e.a mingling of molecules and/or ions. —
Water is a resource of ______________ for chemical reactions in cells.Water is a source of ______________ for chemical reactions in cells.Many type of reactions incorpoprice O and also H from water into biological molecules. This happens when you digest starch and also protein, for instance.
Which statement is true of water’s tensile strength?Which statement is true of water’s tensile strength?Since of hydrogen bonding, water coheres to itself and also adheres to cell walls. That provides it feasible to pull water with plants without breaking the water column.
(a) It results from hydrogen bonding.(b) It helps to pull water with plants.(c) It involves both cohesion and also adhesion.Both (a) and also (b).(a), (b), and (c). —
Water has surface anxiety bereason …
The hydrogen bonds in between surconfront water molecules are normally slightly stretched. Like a extended sheet of rubber, the surchallenge has a tendency to contract and also resists being penetrated.
a. water often tends to evapoprice from the surconfront.b.hydrogen bonds between surface water molecules withstand being extended.c.cohesion pressures are weaker at the surconfront.d.tright here is positive push inside the water mass.e.molecules at the surchallenge make more hydrogen bonds.
Which of the complying with helps many to explain why water has a high particular heat?Which of the complying with helps the majority of to describe why water has actually a high certain heat?When you warmth water, much of the warm is used to break hydrogen bonds. Only the continuing to be warmth can increase molecular activity, increasing 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 sensitive to heat.Both (a) and also (b).Both (b) and (c).
Which variable is crucial in making it possible to cool yourself by sweating? Think carefully!
Random collisions permit some molecules to accumulate even more energy than other molecules. The weakness of hydrogen bonds allows those molecules escape, leaving the cooler molecules behind.
(a) Molecules collide through differed angles and speeds.(b) Hydrogen bonds are reasonably weak.(c) Water has actually more energy at the body surconfront.Both (a) and (b).(a), (b), and also (c).—
Though you add heat, the temperature of boiling water remains constant bereason …
At boiling, all the included warmth is used to break hydrogen bonds. Free of the water mass, the departing steam carries ameans all the added energy, with none left over to raise the temperature.
a.It takes power to circulate water.b.Water has a constant boiling temperature.c.It takes power to break covalent bonds.d.It takes power to break hydrogen bonds.—e.None of the above. The temperature rises during boiling.
Which statement helps to explain why ice is less thick than liquid water?
The ice lattice has actually open spaces because of the angles at which hydrogen bonds create. Heat energy have the right to break water molecules totally free of the lattice so they move right into the openings.
(a) Water molecules make hydrogen bonds at definite angles.(b) Cold molecules relocate much less than heat molecules.(c) Hydrogen bonds lengthen in the cold.All of the above.Both (a) and (b). —
The open up spaces in water’s crystal structure make it feasible for …The open up spaces in water’s crystal structure make it feasible for …
(a) aquatic life to exist at the North Pole.—(b) water to have actually a low boiling suggest.(c) life to take place in hot springs.Both (b) and also (c).(a), (b), and (c).
Why doesn’t oil mix through water?
Water molecules cling to one an additional and won’t part to make room for uncharged (nonpolar) molecules. There’s no repulsion.
(a) Nonpolar molecules repel water molecules.(b) Polar molecules repel nonpolar molecules.(c) Polar molecules attract one another.—(d) Nonpolar molecules entice one one more.Both (a) and also (d).
Which property of water enables dogs to cool themselves by panting?Which residential or commercial property of water allows dogs to cool themselves by panting?Evaporative cooling takes place as soon as molecules via the greatest kinetic energy leave a liquid as gas molecules. Because of water’s high warm of vaporization, a big amount of warmth must be absorbed for 1 gram of water to be converted from liquid to gas. The dog loses this warmth as the water on its tongue evaporates, permitting him to cool down by panting. To understand why this answer is correct, read about evaporative cooling.
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a.water’s high warm of vaporizationb.the formation of covalent bonds between water moleculesc.water’s high surface tension
Which home of water allows a record towel to pick up a puddle of water?
Water adheres to the cellushed molecules in a record towel, permitting the towel to pick up a puddle of water. This is similar to the adhesion between water molecules and cellulose in cell walls responsible for water transfer in plants.
a.water’s high surchallenge tensionb.water’s high warm of vaporizationc.adhesion of water molecules to other kinds of molecules—
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