Covalent Exam

Writing Covalent Formulas

100

When writing a chemical formula, what two things will be on one?

Chemical symbol representing the atom/element

Subscripts - indicating the number of atoms for that representative element

200

What is the chemical formula for Nitrogen Monoxide

NO

300

What is the chemical formula for Dicarbon Hexahydride?

C₂H₆

400

What is the chemical formula for Pentasulfur Octabromide

S₅Br₈

500

What is the chemical formula for Heptanitrogen Decaflouride

N₇F₁₀

Naming Covalent Formulas

100

What numbers represent the following prefixes

Mono 

Tetra

Hepta

Deca

Mono - 1

Tetra - 4

Hepta - 7

Deca - 10 

200

When naming covalent compounds what is the rule for the first element and the last element?

First element keeps its original name

Second element ends in -ide

300

What is the one exception when we do not use prefixes when naming covalent compounds?

When the first element only has one atom

400

What is the name of the covalent compound Se₄Br₈

Tetraselenium Octabromide

500

What is the name of the covalent compound C₆H₁₀

Hexacarbon Decahydride

Lewis Dot Structures

100

What do the dots represent in a Lewis Dot Structure?

Valance Electrons

200

What is the Lewis Dot Structure for As

5

300

What is the Lewis Dot Structure for BH₃

H-B-H

   H

400

What is the Lewis Dot Structure of SiO₂

O=Si=O

500

What is the Lewis Dot Structure of NCl₃

    ..

Cl-N-Cl

    Cl

VSEPER Molecular Geometry

100

When determining the molecular geometry of a molecule, what part of the molecule helps us determine what shape it will take?

The center of the atom

200

When looking at the central atom what two things helps us determine the shape the atom will form?

Shared pairs (bonds) -

Unshared pairs/lone pairs (two pair dots) ..

300

What is the molecular geometry of CO₂

Linear

400

What is the molecular geometry of SH₂

Bent

500

What is the molecular geometry of SO₃

Trigonal Planar

Intermolecular Forces

100

What periodic trend is responsible for the different bonds and intermolecular forces? 

Electronegativity

200

Which intermolecular force is present in every atom because of their electrons?

London Dispersion

300

Which intermolecular force is at play between covalent molecules

Dipole-Dipole

400

Which intermolecular force occurs when Hydrogen is bonded to N, O, or F

Hydrogen Bond

500

Lists the types of intermolecular forces in order of decreasing strength. (High strength to low strength)

Hydrogen bonds, dipole-dipole, London Dispersion