Lesson 2.2.2
2.2.2 Bonding and structure Quiz: OCR Chemistry, Unit 1
20 questions
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Lesson 2.2.2, Bonding and structure: 20 multiple choice questions for the OCR Chemistry (H432), Unit 1: Foundations in chemistry, written with Revision Ninja.
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The 20 questions
-
Which compound has a giant ionic lattice structure?
- I2
- H2O
- NaCl
- CO2
-
What is a covalent bond?
- Attracted oppositely-charged ions
- Delocalised electron sea
- Shared electron pair
- Transferred electron pair
-
What is the bond angle in methane, CH4?
- 120 degrees
- 104.5 degrees
- 109.5 degrees
- 90 degrees
-
What is the bond angle in ammonia, NH3?
- 104.5 degrees
- 120 degrees
- 109.5 degrees
- 107 degrees
-
What is the molecular shape of a water molecule?
- Tetrahedral
- Trigonal planar
- Linear
- Non-linear
-
What is the shape of sulfur hexafluoride, SF6?
- Tetrahedral
- Linear
- Trigonal planar
- Octahedral
-
What is the shape of boron trifluoride, BF3?
- Non-linear
- Tetrahedral
- Pyramidal
- Trigonal planar
-
Which molecule has a permanent dipole?
- BF3
- CO2
- CCl4
- CHCl3
-
What is the molecular shape of an ammonia molecule, NH3?
- Pyramidal
- Non-linear
- Trigonal planar
- Tetrahedral
-
Why is ice less dense than liquid water?
- Higher molar mass
- Closer molecular packing
- Open lattice structure
- Stronger covalent bonds
-
Which substance has the highest boiling point?
- HF
- NH3
- CH4
- H2O
-
Which solid has the highest melting point?
- Carbon dioxide
- Sodium chloride
- Diamond
- Iodine
-
Why does molten sodium chloride conduct electricity, whereas solid sodium chloride does not?
- Mobile molecules
- Delocalised electrons
- Free protons
- Mobile ions
-
What type of interaction attracts water molecules to sodium ions when NaCl dissolves?
- Ion-dipole attraction
- Hydrogen bonding
- Covalent bonding
- London forces
-
How many bonding electron pairs are around the central carbon atom in CO2?
- 8
- 3
- 4
- 2
-
What is the H-N-H bond angle in an ammonium ion, NH4+?
- 120°
- 104.5°
- 109.5°
- 107°
-
Which bond is the most polar?
- H-Br
- H-I
- H-Cl
- H-F
-
What is the molecular shape of carbon dioxide that leads to a non-polar molecule?
- Pyramidal
- Tetrahedral
- Linear
- Bent
-
Which intermolecular force causes bromine to have a higher boiling point than chlorine?
- Permanent dipole-dipole
- Induced dipole-dipole
- Hydrogen bonding
- Covalent bonding
-
Which carbon-carbon bond has the greatest average bond enthalpy?
- Double bond
- Triple bond
- Single bond
- Aromatic bond
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