Chem Test

What is a covalent bond??

Bind that results between nonmetal elements that share electrons.

What is a molecule?

Compund formed when two or more elements are covalently bonded.

What are the two types of Covalent bonds?

Polar and Nonpolar

What is Polar?

Electrons share unequally, even though two non-metals are “sharing” the electrons, one atom is still stronger than-!; is able to pull electrons towards it better, the stronger atom = more electronegative

What is non-polar?

Electrons shared unequally, no “poles” present

What are Diatomic Molecules?

These are formed when two of the same (identical) type of atom share electrons, which increases the stability of the atoms

What are the seven types of Diatomic molecules?

Hydrogen, oxygen, bromine, fluorine, iodine, nitrogen, and chlorine

Mono

1

Di

2

Tri

3

Tetra

4

Penta

5

Hexa

6

Hepta

7

Octa

8

Nona

9

Deca

10

Write the name: PO5

Phosphorus pentoxide

Write the name: S2O4

Disulfur tetraoxide

Is a single bond strong or weak?

Weak

Is a double bond strong or weak?

It’s in the middle.

Is a triple bond strong or weak?

Strong

What is. Covalent bond?

The bond length is determined based on the strength of the bond.

What does VSEPR stand for?

Valence Shell Electrons Pair Repulsion

What is VSEPR?

The tendency for electron pairs to be as far apart from one another as possible?

Why for VSEPR?

Valence electrons are repulsed by each other.

What is an Electron domain?

an electron domain is just the shape occupied by electrons.

What are bonding Paris?

Electrons shared in a bond

What are lone pairs?

Electrons not in a bond.

What is Multiple bonded pairs?

Double or triple bonds

What a dipole arrow show?

A dipole arrow will show the charge difference.

What is a Intramecular force?

The attraction that results with electrons are given, taken or shared to form bond between 2 or more atoms.

What is Intermolecular forces?

The attraction of a molecular or particle to another molecular or particle

What force can hold 2 covalent bond together?

Intermolecular forces

What force can attraction is caused by polarity?

Intermolecular forces

What are the three types of intermolecular forces?

Hydrogen bonding, dipole-dipole, and London dispersion forces(LDF)

What is hydrogen bonding?

Hydrogen bonding occurs between molecules when H is covalently bonded O, F, or N

What is a dipole-dipole interaction?

The positive end of one molecule is attracted to the negative end of the other, weaker than hydrogen bonding, must be polar molecule

What is London dispersion forces?

Occurs when the electrons shift to one side of the atom causing an electrostatic attraction with a nearby atom, exist in all molecules and atoms, weakest IMF with lowest melting and boiling point, larger atoms have stronger electronegativity