Apologia Chemistry Module 5+

Valence e-

100

In VSEPR Theory, the valence electrons are in one of these

a shell

200

Electrons do this to each other

repel each other

300

Carbon has this many valence electrons

4

400

Neon has this many valence electrons

8

That perfect octet!

500

A covalent bond is not as repulsive as this

an unbonded pair of electrons

The Tetrahedron

100

A tetrahedron has this many faces

4

200

In a tetrahedral molecule, the central atom is located here with respect to the tetrahedron

center of the tetrahedron

300

In a tetrahedral molecule, the atoms that are attached to the central atom are located here with respect to the tetrahedron

the vertices

400

The bond angles are sometimes squeezed down to 105° because of this

two pairs of un-bonded electrons?

500

This relatively flat shape based on the tetrahedron can result if there is one double bond

trigonal shape

Acronyms

100

CCSI

 Covenant Community School International

200

CPCTC

Corresponding Parts of Congruent Triangles are Congruent

300

VSEPR

Valence Shell Electron Pair Repulsion

400

Roy G. Biv

red orange yellow green blue indigo violet

(The visible light spectrum)

500

amu

Atomic Mass Units

Name that Compound

100

NaCl

Sodium chloride - common table salt

200

BaS

Barium sulfide

(Just two elements hanging out as an ionic compound)

300

NH₄OH

Ammonium hydroxide

(Enter the polyatomics!)

400

SF₆

Sulfur hexa-fluoride

(Surely you remember how to recognize and name covalent compounds!!)

500

CuCl₂

Copper (II) chloride

(Gotta say "Copper-2" because copper is one of those squirrely transition metals!)

Hodge Podge

100

This periodic property decreases as you go across a row of the chart

atomic radius

200

There are 5 of them in 0.090120

significant figures

300

Coke is an example of this kind of matter

a homogeneous mixture

400

He is the guy who discovered electrons

JJ Thompson

500

This is the most electronegative element in the world

fluorine