Lesson 3.1.3.6
3.1.3.6 Bond polarity Quiz: AQA Chemistry, Unit 1
20 questions
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Lesson 3.1.3.6, Bond polarity: 20 multiple choice questions for the AQA Chemistry (7405), Unit 1: Physical chemistry, written with Revision Ninja.
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The 20 questions
-
What term describes an atom's power to attract electrons in a covalent bond?
- Ionisation energy
- Electron affinity
- Polarisability
- Electronegativity
-
Which element is the most electronegative?
- Chlorine
- Nitrogen
- Oxygen
- Fluorine
-
Which symbols are used to show partial charges in a polar bond?
- Q and -Q
- + and -
- delta+ and delta-
- 2+ and 2-
-
In a hydrogen chloride molecule, which atom carries the partial negative charge?
- Both equally
- Chlorine
- Hydrogen
- Neither
-
Which molecule has polar bonds but no permanent dipole?
- CO2
- HCl
- H2O
- NH3
-
What property difference between two bonded atoms causes a covalent bond to be polar?
- Electronegativity
- Ionisation energy
- Mass number
- Atomic radius
-
How are electrons distributed in a polar covalent bond?
- Symmetrically
- Unsymmetrically
- Exclusively on one
- Equally
-
Which of these molecules is non-polar overall?
- CH4
- H2O
- NH3
- HCl
-
Why is tetrachloromethane, CCl4, a non-polar molecule overall?
- Symmetrical shape
- Non-polar bonds
- Delocalised electrons
- High electronegativity
-
Which bond is the most polar?
- C-C
- H-F
- O-H
- C-H
-
What is the overall polarity of a boron trifluoride, BF3, molecule?
- Ionic
- Non-polar
- Slightly polar
- Highly polar
-
Towards which atom does the bond dipole point in hydrogen fluoride, HF?
- Hydrogen
- Neither atom
- Both atoms equally
- Fluorine
-
Which molecule has a permanent dipole: NH3, CH4, CO2 or SF6?
- CO2
- SF6
- CH4
- NH3
-
Which bond is the most polar: C-N, C-O or C-F?
- C-C
- C-N
- C-F
- C-O
-
Why does a water molecule have a permanent dipole?
- Cancelling dipoles
- Non-cancelling dipoles
- Equal electronegativities
- Non-polar bonds
-
Which shape prevents the bond dipoles in ammonia from cancelling?
- Trigonal planar
- Trigonal pyramidal
- Linear
- Tetrahedral
-
Which molecule contains polar bonds but has no permanent dipole?
- Ammonia
- Carbon dioxide
- Water
- Hydrogen chloride
-
Why is the covalent bond in a chlorine molecule non-polar?
- High ionization energy
- Different electronegativities
- Equal electronegativities
- Unpaired electrons
-
Which molecule has the largest permanent dipole: HI, HBr, or HCl?
- All are equal
- HBr
- HI
- HCl
-
Which molecule is polar, given that its bonds are arranged asymmetrically?
- BF3
- CO2
- CCl4
- CH2Cl2
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