hosted by type your name here 100 200 400 300 400 bonds – ionic covalent metallic water’s polar...
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Hosted
by
Type your name here
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Bonds – ionic covalent metallic
Water’s Polar
Properties
Molecular Structure and
Polarity
Thermal Expansion/Contraction and Kinetic Energy
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Row 1, Col 1
The type of bond which is formed By attraction of + and – charged
ions.
What is ionic?
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1,2
This property is the reason a dropOf water forms a mound
On a table top.
What is surface tension?
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1,3
A linear bond between the same typeOf atoms would be this.
What is nonpolar covalent?
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1,4
Use the word thermal expansionTo explain why an engineer would put joints
In sidewalk.
(Type the question for 1,4 here.)?
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2,1
This type of bond involves equally Shared valence electrons OR unequally
Shared valence electrons..
What is covalent?
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2,2
This property is the reasonWater “climbs” the edges of
Very narrow tubes.
What is capillary action?
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2,3
The linear bond between hydrogenAnd flourine would be this.
What is polar?
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2,4
Explain what happens to a gas when heated or cooled.
A gas expands when heated and contracts when cooled due to increasing or decreasing kinetic energy of the
particles ?
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3,1
This type of bond leads to electrical conductivity. Atoms are held together by a “sea”
Of electrons.
What is metallic?
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3,2
Increasing the kinetic energyReduces the amount of this
Dissolved substance.
What is dissolved gases?
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3,3
Each of the four carbon-hydrogenBonds in methane is polar. Why is
The whole molecule nonpolar?.
The charges are balanced because of overall symmetry of the tetrahedral structure?
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3,4
If thermal expansion holds true, whyDoes solid water increase in volume
Compared to liquid?.
The water molecules spread out when in the crystal lattice – this is an exception to the rule?
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4,1
If there is a greater than 2.0 differenceIn this property, the bond will be
ionic.
What is electronegativity?
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4,2
Explain why an electricallyCharged balloon can bend a stream of
Water. Use the words: dipole and polar.
The negatively charged balloon is attracted to the positive dipole in polar water molecules?
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4,3
The reason (in terms of structure and dipoles)Water is polar.
Water is a bent molecule and the oxygen forms a negative dipole and the hydrogens form a positive
dipole?
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4,4
Explain how a thermometer worksIn terms of thermal expansion.
The liquid transfers kinetic energy to the glass and then to the alcohol which expands and thus rises up the tube?
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5,1
In methane, carbon is likely to form (number and type)
Of bonds with hydrogen atoms.
What is four and polar covalent?
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5,2
Would you expect to see a meniscusIf you measured nonpolar rubbing
Alcohol in a graduated cylinder? Explain.
No, since rubbing alcohol is nonpolar, polar properties such as adhesion, cohesion and capillary action would
not be present.
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5,3
Give the structure and polarity of Hydrochloric acid (HCl).
What is linear and polar?
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5,4
A freezer cools off a room whenopen. True or false and why?
False! Heat moves high to low so it is the room warming up the freezer?