- Identify the covalent bond: A covalent bond is formed when two atoms share one or more pairs of electrons.
- Complete the diagrams to show the formation of polyethene: The diagram shows ethene (C₂H₄) monomers. To form polyethene, the double bond between the carbon atoms in each ethene molecule breaks, and new single bonds form between adjacent carbon atoms from different monomers, creating a long chain.
- Some covalently bonded substances have giant covalent structures: Examples include diamond (carbon atoms in a tetrahedral lattice), graphite (layers of hexagonal carbon rings), silicon dioxide (SiO₂ network), and fullerenes (spherical carbon molecules).
- Name the covalent substance shown in Figure 2: The structure shown is diamond.
- Name the type of covalent substance shown in Figure 3: The structure shown is graphite.
- Name the covalent substance shown in Figure 4: The structure shown is buckminsterfullerene (or fullerene).
- Name the compound shown in Figure 5: The compound shown is carbon dioxide (CO₂).
Parent Tip: Review the logic above to help your child master the concept of covalent bonds worksheet.
