Covalent Bonds Notes Check #1

Covalent bonds are one type of

• ionic bond

• metallic bond

• physical bond

• chemical bond

In a covalent bond, valence electrons are _________.

• shared

• transferred

• put into the sea of electrons

• shared and transferred

The Octet Rule does NOT apply to covalent bonds.

• True

• False

• sometimes true, sometimes false

Organize these options into the right categories

Groups:

(a) Ionic Bond

,

(b) Covalent Bond

• good conductor

• forms molecules

• high melting points

• insoluble

• mostly solids at room temperature

• solids, liquids, or gases at room temperature

• low melting points

• bad conductor

• soluble

• forms crystals

The attraction for an electron is

• reactivity

• ionization energy

• electronegativity

• polarization

Nonmetals have (a)   electronegativities than metals.​

• higher
• lower
• the same

Place the following terms to their correct category.

Groups:

(a) Polar Covalent Bond

,

(b) Nonpolar Covalent Bond

• has + and - charges

• share electrons equally

• does NOT have + or - charges

• share electrons unequally

In a ​ (a)   covalent bond, ​ (b)   hang around the element with the ​ (c)   .

• polar
• electrons
• highest electronegativity
• nonpolar
• ionic
• metallic
• protons
• neutrons
• lowest electronegativity
• highest ionization energy

Decide if each element listed will form a covalent bond or if it will not form a covalent bond. Use the PTOE provided in the picture to help you. *HINT: You can click the picture to enlarge it.

Groups:

(a) Will form Covalent Bonds

,

(b) Will NOT form Covalent Bonds

• sodium

• boron

• iron

• hydrogen

• oxygen

• chlorine

• iodine

• carbon

• helium

In covalent bonds, electrons must be shared because their

• electronegativities are very different

• electronegativities are too similar

• their radius is too similar

• their ionization energies are too similar