Unit 4: Bonding

Lewis Dot

100

Draw the Lewis dot structure of a calcium atom

Ca two dots

200

Draw the Lewis dot structure of a Oxygen ion 

Oxygen brackets with 8 dots

300

Draw the lewis dot structure of HF

H no dots line to F with 6 dots 

400

Draw the Lewis dot structure of KI

brackets, k with + charge and I with - charge and 8 electrons

500

Draw the Lewis dot structure of N₂

N with three bond to other N, both have a lone pair

Ionic Compounds

100

A ionic bond occurs when __________________

Transfer of electrons 

200

Name the following compound: K₂CO₃

Potassium carbonate

300

Name three properties of ionic compounds. 

-Conducts electricity aqueous

-Solids

-High m.p./b.p.

-Lattice structure 

-Hard and brittle

400

When atoms bond they tend to ______ energy and ______ stability. 

Lose energy and gain stability 

500

Give the formula of the following two compounds:

Iron (III) Oxide

Iron (II) Oxide 

Fe₂O₃

FeO

Molecular Compounds

100

A molecular compound forms when __________________

atoms share electrons

200

Covalent bonding occurs between what two "types" of atoms? 

Nonmetals only 

300

Name three properties of covalent bonding

-poor electrical conductivity

-low m.p./b.p.

-soft and flexible

-all three states of matter

400

How many electrons are shared in a single bond? double bond? triple bond? 

Single - 2

Double - 4

Triple - 6

500

Identify all the types of bonding that exist in the following molecule. 

Na₂SO₄

Polarity

100

A nonpolar covalent bond occurs when __________________ 

Electrons shared equally between atoms in the compound

200

A polar covalent bond occurs when ______________

Atoms are shared unequally in the compound

300

What is polarity? 

Distribution of electric charge in a compound/molecule causing a dipole moment

400

Identify the type of bond and molecular polarity of the following molecule: CO₂

Polar bonds; nonpolar molecule (SNAP)

500

What is the bond polarity, molecular polarity and shape of the following molecule: CCl4

Polar bonds, nonpolar molecule, tetrahedral shape 

IMFs

100

Gases have _______ molecular forces than solids/liquids. 

Weaker 

200

What are Intermolecular forces? 

Attraction molecule have for one another 

300

Molecules that only have London dispersion forces typically have ________ m.p. and b.p.

Lower 

400

Dipole-dipole bonding occurs between what type of molecules? 

Polar molecules

500

Hydrogen bonding can only occur with Hydrogen and what other three elements?

Nitrogen, oxygen, and flourine