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Chemical Bonding and Structure

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Ionic bonding and structure

Subtopic

Ionic bonding and structure under Chemical Bonding and Structure for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following ions has the correct charge and formula?

    A.

    Sulfate: SO4−SO_4^{-}

    B.

    Phosphate: PO43−PO_4^{3-}

    C.

    Nitrate: NO2−NO_2^{-}

    D.

    Ammonium: NH3+NH_3^{+}

  2. 2.

    Which property is generally characteristic of ionic compounds?

    A.

    Low melting and boiling points.

    B.

    High volatility at room temperature.

    C.

    Ability to conduct electricity in the solid state.

    D.

    Brittleness when a force is applied to the crystal lattice.

  3. 3.

    What is the correct chemical formula for the ionic compound formed between aluminum and oxygen?

    A.

    AlOAlO

    B.

    Al3O2Al_3O_2

    C.

    Al2O3Al_2O_3

    D.

    AlO2AlO_2

Download the worksheet for Chemical Bonding and Structure - Ionic bonding and structure to practice offline. It includes additional chapter-level practice questions.

Covalent bonding

Subtopic

Covalent bonding under Chemical Bonding and Structure for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following bonds is the most polar?

    A.

    C−HC-H

    B.

    O−HO-H

    C.

    N−HN-H

    D.

    F−FF-F

  2. 2.

    According to the VSEPR theory, what is the molecular geometry of a molecule with three bonding pairs and one lone pair on the central atom?

    A.

    Trigonal planar

    B.

    Tetrahedral

    C.

    Trigonal pyramidal

    D.

    Bent

  3. 3.

    Which molecule contains a triple covalent bond?

    A.

    O2O_{2}

    B.

    N2N_{2}

    C.

    F2F_{2}

    D.

    CH4CH_{4}

Download the worksheet for Chemical Bonding and Structure - Covalent bonding to practice offline. It includes additional chapter-level practice questions.

Intermolecular forces

Subtopic

Intermolecular forces under Chemical Bonding and Structure for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Based on the principle of 'like dissolves like', which of the following substances would be most soluble in water (H2OH_{2}O)?

    A.

    Ethanol (CH3CH2OHCH_{3}CH_{2}OH)

    B.

    Methane (CH4CH_{4})

    C.

    Hexane (C6H14C_{6}H_{14})

    D.

    Carbon tetrachloride (CCl4CCl_{4})

  2. 2.

    As the molar mass of straight-chain alkanes increases, their boiling points also increase. Which statement provides the best explanation for this observation?

    A.

    The covalent bonds within the molecules become stronger.

    B.

    The molecules become more polar as they grow longer.

    C.

    The molecules can form hydrogen bonds when they are larger.

    D.

    The number of electrons increases, leading to stronger London dispersion forces.

  3. 3.

    Which molecule is capable of forming hydrogen bonds between its molecules in the liquid state?

    A.

    CH4CH_{4}

    B.

    NH3NH_{3}

    C.

    H2SH_{2}S

    D.

    CH3ClCH_{3}Cl

Download the worksheet for Chemical Bonding and Structure - Intermolecular forces to practice offline. It includes additional chapter-level practice questions.

Metallic bonding

Subtopic

Metallic bonding under Chemical Bonding and Structure for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following elements would be expected to have the strongest metallic bonding?

    A.

    NaNa

    B.

    MgMg

    C.

    AlAl

    D.

    KK

  2. 2.

    Why are metals generally malleable and ductile?

    A.

    The delocalized electrons hold the atoms in fixed, rigid positions.

    B.

    The strong covalent bonds between metal atoms are easily broken and reformed.

    C.

    Layers of positive ions can slide over each other without breaking the metallic bond.

    D.

    The metallic lattice contains gaps that allow atoms to move freely.

  3. 3.

    Which property of metals is primarily due to the presence of delocalized electrons?

    A.

    High density

    B.

    Brittleness

    C.

    Electrical conductivity

    D.

    Low volatility

Download the worksheet for Chemical Bonding and Structure - Metallic bonding to practice offline. It includes additional chapter-level practice questions.

Further aspects of covalent bonding and structure (HL only)

Subtopic

Further aspects of covalent bonding and structure (HL only) under Chemical Bonding and Structure for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    How many σ\sigma (sigma) and π\pi (pi) bonds are present in a molecule of ethene, C2H4C_2H_4?

    A.

    4 σ\sigma and 1 π\pi

    B.

    5 σ\sigma and 2 π\pi

    C.

    6 σ\sigma and 0 π\pi

    D.

    5 σ\sigma and 1 π\pi

  2. 2.

    Which type of hybridization is observed in the carbon atoms of diamond?

    A.

    spsp

    B.

    sp3sp^3

    C.

    sp2sp^2

    D.

    sp3d2sp^3d^2

  3. 3.

    What is the molecular geometry and the bond angle of the sulfur hexafluoride (SF6SF_6) molecule?

    A.

    Square planar, 90∘90^{\circ}

    B.

    Trigonal bipyramidal, 90∘90^{\circ} and 120∘120^{\circ}

    C.

    Octahedral, 90∘90^{\circ}

    D.

    Tetrahedral, 109.5∘109.5^{\circ}

Download the worksheet for Chemical Bonding and Structure - Further aspects of covalent bonding and structure (HL only) to practice offline. It includes additional chapter-level practice questions.

Hybridization (HL only)

Subtopic

Hybridization (HL only) under Chemical Bonding and Structure for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the total number of electron domains around a central atom that exhibits sp3sp^3 hybridization?

    A.

    4

    B.

    3

    C.

    2

    D.

    5

  2. 2.

    Which of the following bond angles is most typically associated with an ideal sp2sp^2 hybridized central atom?

    A.

    180∘180^\circ

    B.

    120∘120^\circ

    C.

    109.5∘109.5^\circ

    D.

    90∘90^\circ

  3. 3.

    How many sigma (σ\sigma) and pi (π\pi) bonds are present in one molecule of ethyne (C2H2C_2H_2)?

    A.

    2σ2\sigma and 3π3\pi

    B.

    3σ3\sigma and 2π2\pi

    C.

    5σ5\sigma and 0π0\pi

    D.

    3σ3\sigma and 1π1\pi

Download the worksheet for Chemical Bonding and Structure - Hybridization (HL only) to practice offline. It includes additional chapter-level practice questions.

Chemical Bonding and Structure - Grade 12 Chemistry (IB) | Krit.club