Covalent Bonding Flashcards
What happens when atoms share pairs of electrons?
They form covalent bonds.
What characterizes the strength of covalent bonds between atoms?
They are strong.
What can covalently bonded substances consist of?
They may consist of small molecules.
What should students be able to recognize based on chemical formulas?
Common substances as small molecules.
Give an example of covalently bonded substances with very large molecules.
Polymers.
Name examples of giant covalent structures.
Diamond and silicon dioxide.
How can covalent bonds in molecules and giant structures be represented?
Through dot and cross diagrams.
Provide an example of a polymer representation.
Poly(ethene) with the formula H(H/n)C(CH2CH3)n.
What skills should students develop regarding covalent bonding?
Drawing dot and cross diagrams, representing covalent bonds, describing limitations of diagrams, and deducing molecular formulas.
