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Reactions and Stoichiometry
Electronic Structure and Periodicity
IMF's
Atomic Structure
Chemistry Pot-luck
100

How do you determine the average atomic mass of an isotope?

Convert percent to decimals, multiply by mass of the isotope, add the masses together and then compare to the periodic table. 

100
How many unpaired electrons does a ground state N atom have?
3
100
What is the difference between polar and nonpolar covalent bonds?

Polar covalent bonds share electrons unequally by nonpolar covalent bonds share electrons equally

100

What is the long hand electron configuration for Cadmium?

1s2 2s2.2p6.3s2 3p6.4s2.3d10 4p6 5s2 4d9

100

What is the only letter of the alphabet that DOESN'T appear on the periodic table?

J (also accept Q, but it used to be there for Uuq)

200

Which element has a configuration ending in 5f10?

Cf- californium

200
Which of the subshells in the 3rd shell is destabilized the LEAST by inner electrons?
The 3s subshell
200

List all IMF(s) present in HF and CH4?

HF has dipole-dipole, hydrogen bonding and LDF while CH4 has London Dispersion Forces

200

When lithium hydroxide pellets are added to a solution of sulfuric acid (H2SO4), lithium sulfate and water are formed. What is the balanced chemical equation?

2,1,1,2

200
Apart from mercury, what is the only other element that is liquid at room temperature and atmospheric pressure?
Bromine
300
What is the formula of the precipitate formed when ammonium sulfate solution reacts with strontium nitrate solution?
SrSO4
300
Out of C, Si and P: which has the highest electronegativity?
C
300

When does a gas deviate from the ideal gas law?

Low temperatures and high pressures

300

What are the 7 know diatomic elements on the periodic table?

H2, N2, O2, F2, Cl2, Br2, I2

300
Which form (allotrope) of oxygen is produced in lightening strikes?
Ozone (O3)
400
How many moles of oxygen gas are required to completely burn 4 moles of methanol (CH3OH)?
2CH3OH + 3O2 gives 2CO2 + 4H2O 6moles of O2 are required
400
Which of these elements has the lowest first ionization energy: Mg, Al, Si, P, B, C, N ?
Al (dip after Mg)
400

What are the waves of the electromagnetic spectrum in order of decreasing frequency?

Gamma, X-Ray, UV light, visible light, Infrared, Microwaves and Radio Waves. 

400

A student obtains a sample of a pure solid compound. In addition to Avogadro’s number, which of the following must the student know in order to determine how many molecules are in the sample?

The molar mass of the compound

400

What color is liquid oxygen?

Blue

500
What piece of glassware is used to make up an exact 1.000M solution of NaCl(aq)?
Volumetric flask
500
What is the correct explanation for why a sulfide ion has a larger radius than a sulfur atom?
Increased electron-electron repulsion in the outer shell
500

A student handles a sample container (e.g. a test tube or a cuvette) that holds an unknown solution and leaves fingerprints on the path of the light beam. How will this effect the calculated concentration of the unknown? Explain your answer.

The readings will appear higher due to the fingerprints absorbing some of the light from the beam. 

500

Which of these species displays resonance? phosphorus pentachloride, phosphate ion, tetraphosporus decoxide, carbon monoxide

phosphate ion

500

Where did Mrs. Gangi study chemistry?

Texas A&M University College Station