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Chemical Bonding

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

Ionic Bonding

Subtopic

Ionic Bonding under Chemical Bonding for Grade 9 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    If an atom gains 3 electrons, what will its charge be?

    A.

    +3+3

    B.

    −3-3

    C.

    00

    D.

    +1+1

  2. 2.

    What is the name of the compound LiBrLiBr?

    A.

    Lithium bromine

    B.

    Lithium bromide

    C.

    Lithium boron

    D.

    Lithium bromate

  3. 3.

    Which of the following is a reason why atoms form ions?

    A.

    To become more radioactive

    B.

    To increase their mass

    C.

    To achieve a stable outer electron shell

    D.

    To decrease the number of protons

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

Covalent Bonding

Subtopic

Covalent Bonding under Chemical Bonding for Grade 9 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the octet rule in the context of covalent bonding?

    A.

    Atoms want to have 8 protons

    B.

    Atoms want to have 8 neutrons

    C.

    Atoms want to have 8 valence electrons

    D.

    Atoms want to have 8 total electrons

  2. 2.

    Which of the following is the correct name for the compound N2O4N_{2}O_{4}?

    A.

    Nitrogen oxide

    B.

    Dinitrogen tetroxide

    C.

    Nitrogen tetraoxide

    D.

    Dinitrogen oxide

  3. 3.

    A molecule of ammonia (NH3NH_{3}) has how many lone pairs on the central nitrogen atom?

    A.

    1

    B.

    2

    C.

    3

    D.

    0

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

Metallic Bonding

Subtopic

Metallic Bonding under Chemical Bonding for Grade 9 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the primary difference between a pure metal and an alloy?

    A.

    Pure metals are mixtures; alloys are pure

    B.

    Pure metals have one type of atom; alloys have two or more

    C.

    Alloys have no electrons

    D.

    Pure metals do not conduct electricity

  2. 2.

    The luster of a metal is caused by:

    A.

    The vibration of positive ions

    B.

    The reflection of light by delocalized electrons

    C.

    The absorption of light by the nucleus

    D.

    The movement of heat through the lattice

  3. 3.

    Which property is a result of the ability of layers of atoms to slide past one another?

    A.

    Electrical conductivity

    B.

    High density

    C.

    Malleability

    D.

    High melting point

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

Lewis Dot Structures

Subtopic

Lewis Dot Structures under Chemical Bonding for Grade 9 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of these is the correct number of dots for a Barium (BaBa) atom?

    A.

    2

    B.

    8

    C.

    56

    D.

    1

  2. 2.

    In the Lewis structure for Carbon Tetrachloride (CCl4CCl_4), how many single bonds are formed with the central Carbon?

    A.

    1

    B.

    2

    C.

    3

    D.

    4

  3. 3.

    How many valence electrons does an atom of Selenium (SeSe) have in its Lewis structure?

    A.

    4

    B.

    6

    C.

    16

    D.

    34

Download the worksheet for Chemical Bonding - Lewis Dot Structures to practice offline. It includes additional chapter-level practice questions.

Chemical Bonding - IB Grade 9 Science Notes & Revision | Krit.club