Lesson 5: Covalent Bonds

Hope this helps!

Covalent bonds have valence electrons that are…

shared not transferred.

Covalent Bonds are bonds formed between…

nonmetal atoms only

Atoms still follow the octet rule: The goal of bond formation is to achieve…

a stable electron configuration.

Examples of molecules include:

H2O and CO2 and NH3 and C6H12O6 and CH4

The term “molecule” cannot be used with ionic compounds. For example, consider NaCl. You cannot say salt molecule. You can say…

You can say salt samples, salt substance, or salt crystals.

Fluorine has 7 valence electrons. It needs ___ ____ electron to achieve a stable octet.

one more

Fluorine will form a covalent bond with another fluorine atom. They will each share ___ _______ ______

one valence electron.

A line represents a shared pair of electrons. A line can be used in place of __ ____ ____________ ___ ______ ____ __ _________ Carbon atoms always form 4 bonds.

2 dots representing the shared pair of electrons.

A molecule is a ______ ____ __ ____joined together by covalent bonds.

neutral group of atoms

Carbon atoms can form 4 single bonds OR ___ _______ _____ OR a triple ____ ___ __ ___ __ OR any combination that adds up to 4 bonds total.

two double bonds, bond plus a single bond