Metallic Bonding
Chemistry ⇒ Chemical Bonding and Structure
Metallic Bonding starts at 9 and continues till grade 12.
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Describe how metallic bonding allows metals to conduct electricity.
Describe how the structure of a metal changes when it is alloyed with another element.
Describe the difference between metallic bonding and ionic bonding.
Describe the role of positive metal ions in metallic bonding.
Describe what happens to the metallic bond when a metal is heated to its melting point.
Explain why alloys are often harder than pure metals.
Explain why metals are malleable and ductile based on metallic bonding.
Explain why metals are not soluble in water.
Which of the following best describes the 'sea of electrons' model in metallic bonding?
(1) Electrons are fixed in place between atoms
(2) Electrons are shared only between two atoms
(3) Electrons are free to move throughout the metal lattice
(4) Electrons are transferred from one atom to another
Which of the following best explains why metals are good conductors of heat?
(1) They have free-moving ions
(2) They have delocalized electrons that transfer energy
(3) They have strong covalent bonds
(4) They have low melting points
Which of the following best explains why metals are shiny?
(1) They have a regular lattice
(2) Their delocalized electrons reflect light
(3) They have high melting points
(4) They are malleable
Which of the following is a correct statement about the structure of metals?
(1) Metals consist of molecules held by covalent bonds
(2) Metals consist of positive ions in a sea of delocalized electrons
(3) Metals consist of negative ions only
(4) Metals have no regular structure
Fill in the blank: In metallic bonding, the positive metal ions are surrounded by a ______ of delocalized electrons.
Fill in the blank: The ______ electrons in a metal are responsible for its ability to conduct heat and electricity.
Fill in the blank: The ______ of a metal is a measure of how easily it can be drawn into a wire.
Fill in the blank: The ability of metals to be drawn into wires is called ______.
True or False: Alloys are mixtures of metals that also exhibit metallic bonding.
True or False: In metallic bonding, electrons are localized between two atoms.
True or False: Metallic bonding can occur in both pure metals and alloys.
True or False: Metallic bonding is only found in solid metals.
