Gr 10 Physical Sciences Ch 4: Covalent Bonding
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Questions and Answers

What type of atoms participate in covalent bonding?

  • Non-metal atoms (correct)
  • Metal atoms
  • Noble gas atoms
  • All types of atoms

    • What is the main purpose of covalent bonding in atoms?

  • To lose more electrons
  • To fill their outer energy shells (correct)
  • To increase their atomic mass
  • To gain more electrons

    • What is the attractive force that holds atoms together in a covalent bond?

  • Electrostatic repulsion
  • Magnetic force
  • Electrostatic attraction (correct)
  • Gravitational force

    • What is the definition of covalent bonding?

    <p>A form of chemical bonding where pairs of electrons are shared between atoms</p> Signup and view all the answers

    How many electrons are shared in a single covalent bond?

    <p>Two</p> Signup and view all the answers

    What type of covalent bond is formed when six electrons are shared between two atoms?

    <p>Triple bond</p> Signup and view all the answers

    How many electron pairs are shared in a double covalent bond?

    <p>Two</p> Signup and view all the answers

    What is an example of a molecule with a triple covalent bond?

    <p>Nitrogen molecule (N₂)</p> Signup and view all the answers

    What is the valency of an element in group 1 of the periodic table?

    <p>1</p> Signup and view all the answers

    What type of bond is formed between hydrogen and chlorine atoms in hydrogen chloride?

    <p>Covalent bond</p> Signup and view all the answers

    What is the number of valence electrons in an oxygen atom?

    <p>6</p> Signup and view all the answers

    What type of bond is formed between carbon and oxygen atoms in carbon dioxide?

    <p>Double covalent bond</p> Signup and view all the answers

    Why do covalent compounds have lower melting and boiling points compared to ionic compounds?

    <p>Weaker intermolecular forces</p> Signup and view all the answers

    What is a characteristic of covalent compounds that makes them flexible?

    <p>Weak intermolecular forces</p> Signup and view all the answers

    Why are covalent compounds generally not very soluble in water?

    <p>Non-polar molecules</p> Signup and view all the answers

    What is the valency of an element in group 13 of the periodic table?

    <p>13 - 10</p> Signup and view all the answers

    How many pairs of electrons are shared between two nitrogen atoms in a nitrogen molecule?

    <p>3</p> Signup and view all the answers

    What is the characteristic of graphite that makes it slippery?

    <p>Flexibility</p> Signup and view all the answers

    What is the primary reason why covalent bonds form between atoms?

    <p>To achieve a more stable configuration</p> Signup and view all the answers

    In a covalent bond, what is the role of the shared electrons?

    <p>They move in the orbitals around both atoms, creating an attractive force</p> Signup and view all the answers

    What is the difference between a single covalent bond and a double covalent bond?

    <p>The number of electron pairs shared between the atoms</p> Signup and view all the answers

    Which of the following molecules has a single covalent bond?

    <p>Hydrogen chloride (HCl)</p> Signup and view all the answers

    What is the characteristic of a triple covalent bond?

    <p>It is formed when six electrons are shared between two atoms</p> Signup and view all the answers

    What is a common feature of covalent bonds in molecules?

    <p>The electrons are shared between the atoms to achieve a stable configuration</p> Signup and view all the answers

    What is the result of the overlapping of outermost orbitals in covalent bonding?

    <p>The sharing of electrons between the atoms</p> Signup and view all the answers

    Which of the following statements is true about covalent bonds?

    <p>Covalent bonds involve the sharing of electrons between atoms</p> Signup and view all the answers

    What is the valency of an element in group 2 of the periodic table?

    <p>The group number</p> Signup and view all the answers

    What is the characteristic of covalent compounds that makes them more flexible than ionic compounds?

    <p>The ability of their molecules to move around</p> Signup and view all the answers

    What is the reason for the low solubility of covalent compounds in water?

    <p>The non-polar nature of their molecules</p> Signup and view all the answers

    How many valence electrons does a carbon atom have?

    <p>Four</p> Signup and view all the answers

    What is the type of bond formed between the carbon atom and each oxygen atom in a carbon dioxide molecule?

    <p>Double covalent bond</p> Signup and view all the answers

    What is the valency of an element in group 17 of the periodic table?

    <p>The group number minus 10</p> Signup and view all the answers

    What is the characteristic of the chlorine atom in a hydrogen chloride molecule?

    <p>It has three pairs of non-bonding electrons</p> Signup and view all the answers

    How many electrons are shared between the two iodine atoms in an iodine molecule?

    <p>One pair</p> Signup and view all the answers

    What is the characteristic of the oxygen atom in a water molecule?

    <p>It has two pairs of non-bonding electrons</p> Signup and view all the answers

    What is the type of bond formed between the two nitrogen atoms in a nitrogen molecule?

    <p>Triple covalent bond</p> Signup and view all the answers

    What is the primary function of the shared electrons in a covalent bond?

    <p>To create an attractive force between the atoms and their nuclei</p> Signup and view all the answers

    Which type of covalent bond involves the sharing of two pairs of electrons between atoms?

    <p>Double covalent bond</p> Signup and view all the answers

    What is the result of the overlapping of outermost orbitals in covalent bonding?

    <p>The sharing of electrons between atoms</p> Signup and view all the answers

    What is the characteristic of a covalent bond that enables atoms to achieve a more stable configuration?

    <p>The sharing of electrons between atoms</p> Signup and view all the answers

    Which of the following molecules exhibits a single covalent bond?

    <p>Hydrogen chloride (HCl)</p> Signup and view all the answers

    What is the difference between a single covalent bond and a double covalent bond?

    <p>The number of electron pairs shared between the atoms</p> Signup and view all the answers

    What is the characteristic of a triple covalent bond that makes it strong?

    <p>The sharing of three electron pairs between the atoms</p> Signup and view all the answers

    What is the common feature of covalent bonds in molecules?

    <p>The sharing of electrons between atoms</p> Signup and view all the answers

    What is the valency of an element in group 18 of the periodic table?

    <p>The group number minus 10</p> Signup and view all the answers

    What type of bond is formed between the hydrogen atom and the chlorine atom in a hydrogen chloride molecule?

    <p>Single covalent bond</p> Signup and view all the answers

    What is the characteristic of covalent compounds that makes them more flexible than ionic compounds?

    <p>Weak intermolecular forces</p> Signup and view all the answers

    What is the result of the sharing of electrons between two atoms in a covalent bond?

    <p>The formation of a molecule with a neutral charge</p> Signup and view all the answers

    What is the valency of an element in group 1 of the periodic table, except for hydrogen?

    <p>The group number</p> Signup and view all the answers

    What is the reason for the low solubility of covalent compounds in water?

    <p>The non-polar nature of covalent compounds</p> Signup and view all the answers

    What is the characteristic of the carbon atom in a carbon dioxide molecule?

    <p>It shares two pairs of electrons with each oxygen atom</p> Signup and view all the answers

    What is the characteristic of the oxygen atom in a water molecule?

    <p>It shares one pair of electrons with each hydrogen atom</p> Signup and view all the answers

    What is the characteristic of the transition metals in terms of valency?

    <p>They have a varying valency</p> Signup and view all the answers

    What is the characteristic of the iodine molecule in terms of covalent bonds?

    <p>It has a single covalent bond</p> Signup and view all the answers

    What is the primary reason why atoms fill their outer energy shells in a covalent bond?

    <p>To achieve a more stable configuration</p> Signup and view all the answers

    What is the result of the movement of shared electrons in a covalent bond?

    <p>The atoms are held together in a covalent bond</p> Signup and view all the answers

    What is the characteristic of a double covalent bond that distinguishes it from a single covalent bond?

    <p>The number of electron pairs shared between the atoms is two</p> Signup and view all the answers

    What is the result of the overlapping of outermost orbitals in covalent bonding?

    <p>The electron pairs are shared between the atoms</p> Signup and view all the answers

    What is the characteristic of covalent bonds that enables atoms to achieve a more stable configuration?

    <p>The sharing of electrons between the atoms</p> Signup and view all the answers

    What is the difference between a double covalent bond and a triple covalent bond?

    <p>The number of electron pairs shared is two more in a triple bond</p> Signup and view all the answers

    What is the common feature of covalent bonds in molecules?

    <p>The sharing of electrons between the atoms</p> Signup and view all the answers

    What is the characteristic of a triple covalent bond that makes it strong?

    <p>The sharing of three pairs of electrons between the atoms</p> Signup and view all the answers

    What is the valency of an element in group 16 of the periodic table?

    <p>The group number minus 10</p> Signup and view all the answers

    What is the characteristic of covalent bonds that makes them strong?

    <p>The electrons are shared equally between the atoms</p> Signup and view all the answers

    What is the type of bond formed between the carbon atom and each oxygen atom in a carbon dioxide molecule?

    <p>Double covalent bond</p> Signup and view all the answers

    What is the valency of transition metals?

    <p>Variable and indicated by a Roman numeral</p> Signup and view all the answers

    What is the characteristic of covalent compounds that makes them flexible?

    <p>The weak intermolecular forces between the molecules</p> Signup and view all the answers

    What is the type of bond formed between the two nitrogen atoms in a nitrogen molecule?

    <p>Triple covalent bond</p> Signup and view all the answers

    What is the characteristic of graphite that makes it slippery?

    <p>The weak intermolecular forces between the layers</p> Signup and view all the answers

    What is the valency of an element in group 15 of the periodic table?

    <p>The group number minus 10</p> Signup and view all the answers

    What is the result of the overlapping of outermost orbitals in covalent bonding?

    <p>The formation of covalent bonds</p> Signup and view all the answers

    What is the characteristic of covalent compounds that makes them less soluble in water?

    <p>The non-polar nature of the molecules</p> Signup and view all the answers

    What is the minimum number of electron pairs required for an atom to achieve a stable configuration through covalent bonding?

    <p>Depends on the atom</p> Signup and view all the answers

    Which of the following statements is true about the shared electrons in a covalent bond?

    <p>They create an attractive force between the nuclei</p> Signup and view all the answers

    What is the primary reason why atoms form covalent bonds with other atoms?

    <p>To achieve a full outer energy shell</p> Signup and view all the answers

    What is the characteristic of a covalent bond that enables it to be stronger than an ionic bond?

    <p>The sharing of electrons</p> Signup and view all the answers

    Which of the following molecules exhibits a double covalent bond and a single covalent bond?

    <p>Carbon dioxide (CO₂)</p> Signup and view all the answers

    What is the relationship between the valency of an element in groups 13 to 18 and its group number?

    <p>The valency is the group number minus 10.</p> Signup and view all the answers

    What is the characteristic of covalent compounds that allows them to be more flexible than ionic compounds?

    <p>The ability of molecules to move around and slide over each other.</p> Signup and view all the answers

    What is the number of valence electrons in a carbon atom?

    <p>4</p> Signup and view all the answers

    What is the type of bond formed between the carbon atom and each oxygen atom in a carbon dioxide molecule?

    <p>Double covalent bond</p> Signup and view all the answers

    What is the characteristic of the chlorine atom in a hydrogen chloride molecule?

    <p>It has three pairs of non-bonding electrons.</p> Signup and view all the answers

    What is the primary purpose of electron sharing in covalent bonding?

    <p>To achieve a more stable electron configuration</p> Signup and view all the answers

    What type of covalent bond is formed when two pairs of electrons are shared between two atoms?

    <p>Double covalent bond</p> Signup and view all the answers

    What is the result of the overlapping of outermost orbitals in covalent bonding?

    <p>The sharing of electrons between atoms</p> Signup and view all the answers

    What is a characteristic of a covalent bond that holds atoms together?

    <p>An attractive force between the electrons and nuclei</p> Signup and view all the answers

    What is the number of electrons shared in a triple covalent bond?

    <p>Six electrons</p> Signup and view all the answers

    What is the valency of an element in group 1 of the periodic table, except for hydrogen?

    <p>1</p> Signup and view all the answers

    What is the characteristic of covalent compounds that makes them more flexible than ionic compounds?

    <p>Weaker intermolecular forces</p> Signup and view all the answers

    What is the type of bond formed between the carbon atom and each oxygen atom in a carbon dioxide molecule?

    <p>Double covalent bond</p> Signup and view all the answers

    What is the valency of an element in group 13 of the periodic table?

    <p>The group number minus 10</p> Signup and view all the answers

    What is the characteristic of graphite that makes it slippery?

    <p>The ability of layers to slide over each other</p> Signup and view all the answers

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