2.1 Chemical bonds: ionic, covalent, and metallic

• Ionic bonds are formed by the transfer of electrons
• Match the bond type with its definition:

  Ionic ↔️ Transfer of electrons

  Covalent ↔️ Sharing of electrons

  Metallic ↔️ Delocalization of valence electrons
• Which type of bond is formed by the delocalization of valence electrons?

  Metallic
• When do ionic compounds conduct electricity?

  Dissolved or molten
• Steps in the formation of an ionic bond:

  1️⃣ Electron transfer from metal to non-metal

  2️⃣ Formation of positive cations and negative anions

  3️⃣ Strong electrostatic forces create crystalline lattice
• What creates a stable arrangement in a covalent bond?

  Sharing electron pairs
• Covalent compounds have high melting and boiling points.

  False
• Covalent compounds can exist as gases, liquids, or solids at room temperature.
• Match the bond type with its definition:

  Ionic ↔️ Transfer of electrons between a metal and a non-metal

  Covalent ↔️ Sharing of electrons between non-metal atoms

  Metallic ↔️ Delocalization of valence electrons in a metal
• Metallic solids are ductile because they can be drawn into wires without fracturing.
• Ionic compounds are crystalline solids with high melting and boiling points.

  True
• Ionic compounds have high melting and boiling points due to strong electrostatic forces.
• Under what conditions do ionic compounds conduct electricity?

  When dissolved or molten
• Covalent compounds have variable melting and boiling points and can exist as gases, liquids, or solids at room temperature.

  True
• Covalent compounds can be gases, liquids, or solids with variable melting and boiling points.
• What is the term for the ability of metals to be bent and shaped without breaking?

  Malleability
• Ionic compounds are crystalline solids with high melting and boiling points.
• Metallic bonds produce materials that are good conductors of heat and electricity.


  True
• Covalent bonds are formed between non-metal atoms by sharing electrons.


  True
• In ionic bonds, positive ions are called cations
• Covalent bonds are formed by the sharing of electrons
• Metallic solids are malleable and ductile due to delocalized electrons.


  True
• Ionic bonds are formed between metal and non-metal atoms.

  True
• In metallic bonds, valence electrons form a sea of electrons.

  True
• What is meant by the malleability of metallic solids?

  Ability to be shaped
• Delocalized electrons in metallic solids allow them to be bent without breaking.

  True
• What type of bonds are formed by the transfer of electrons between a metal and a non-metal?

  Ionic bonds
• What type of ions are formed when a metal transfers electrons to a non-metal in an ionic bond?

  Positive cations and negative anions
• Ionic bonds are formed by the transfer of electrons.
• What type of bond is formed by the sharing of electrons between non-metal atoms?

  Covalent
• What properties do metallic solids exhibit due to delocalized electrons?

  Malleability and ductility
• What is the term for the ability of metals to be drawn into wires without fracturing?

  Ductility
• Match the bond type with its definition:

  Ionic ↔️ Transfer of electrons between a metal and a non-metal

  Covalent ↔️ Sharing of electrons between non-metal atoms

  Metallic ↔️ Delocalization of valence electrons in a metal
• What are chemical bonds defined as?

  Forces holding atoms together
• Covalent compounds have high melting and boiling points.

  False
• Ionic bonds create a crystalline lattice structure due to strong electrostatic forces.
• What states of matter can covalent compounds exist in at room temperature?

  Gases, liquids, or solids
• Ionic compounds have high melting and boiling points due to strong electrostatic forces.

  True
• Covalent bonds occur between non-metal atoms.
• Match the bond type with its description:

  Ionic ↔️ Transfer of electrons

  Covalent ↔️ Sharing of electrons

  Metallic ↔️ Delocalization of electrons