Chemistry Exam 2 Review

Bonds

100

Type of bond present in KCl? (Ionic, covalent, or metallic) 

What is Ionic 

200

Type of bond present in Cu? (Ionic, covalent, or metallic)

What is metallic 

300

The type of bond shares electrons? (Ionic, covalent, metallic)

What is covalent 

400

What do the electrons do in a metallic bond?

What is they are delocalized over a region 

500

Which type of bond is the strongest? How does the length compare to the other? (Single, double, triple) 

What is triple bond and it is the shortest bond 

Naming

100

The name of Al₂O₃?

What is Aluminum Oxide 

200

The formula for Copper (II) oxide?

What is CuO

300

The name of HI?

What is hydroiodic acid 

400

The formula for the Sulfate ion?

What is SO₄^2-

500

The name of N₂O₃?

What is dinitrogen trioxide

Geometry / Hybridization

100

The hybridization of something with 2 pairs of lone electrons and a double bond connected to it?

What is sp²

200

The electron geometry of H₂O?

What is tetrahederal (remember electron geometry ignores the difference lone pairs make)

300

What is the molecular geometry of H₂O and why is it different from the electron geometry?

What is bent and because molecular geometry takes into consideration the effects of lone pairs of electrons 

400

The hybridization of a molecule with a triple bond a single bond attached to it?

What is sp hybridization 

500

The theory that describes how we determine the shape of molecules?

What is VSEPR or Valence-shell electron repulsion theory 

Polarity

100

The difference in electronegativity for something that is polar?

What is between .4 and 2.0

200

The type of bond if the difference in electronegativity exceeds 2.0?

What is ionic

300

The reason why BCl₃ is nonpolar? (Draw it out)

What is the geometry balances out 

400

The direction the dipole points in a molecule of H2O? And is the molecule polar or nonpolar?

What is up and polar 

500

The difference between a permanent dipole moment and a temporary dipole moment? 

What is permanent dipoles are present in polar molecules while temporary dipole moments can be present in nonpolar molecules because nonpolar molecules can still have polar bonds 

Misc.

100

The general trend of electronegativity? 

What is it increases as it moves across the periodic table from left to right and increases as it moves up the columns. Fluorine is the most electronegative. 

200

The elements that can have an expanded octet? 

What is nonmetal elements in the third row and lower (must have an atomic number greater than 12)

300

How you calculate the formal charge of a molecule?

What is formal charge = (number valence electrons) - (number of e- in lone pairs + the number of bonds) 

400

As the size of an ion increases, this happens to the lattice energy?

What is it decreases

500

The rule of solubility?

What is "like dissolves like"