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Electronic Structure and Periodicity
Thermochemistry
Bonding
Chemistry Pot-luck
100
How many unpaired electrons does a ground state N atom have?
3
100
What is the average kinetic energy per particle more commonly called?
Temperature
100
What type of bonding would you expect to exist in a sample of bronze?
Metallic bonding
100

List 4 physical changes

- color change

-separation of mixture

- matter state 

- water boiling

- formation of bubble

-precipitate developing

200
Which of the subshells in the 3rd shell is destabilized the LEAST by inner electrons?
The 3s subshell
200
What happens to the enthalpy of a system during an endothermic process?
It increases
200
What is the missing word? Breaking bonds __________ energy
"requires" or "needs"
200

To convert from Mass A to liters of B in a stoichiometry problem, the following steps are followed:

mass ! -> moles A -> moles B -> liters B

300
Out of C, Si and P: which has the highest electronegativity?
C
300

What is the equation that finds the delta H naut of a reaction?

delta H products - delta H reactants

300
What do you call a covalent bond where both electrons come from one atom?
Dative bond
300

Draw the lewis structure of CH3COOH

H-C-C-O-H

Bond two more H to the first C 

Double bond O to the second C


400
Which of these elements has the lowest first ionization energy: Mg, Al, Si, P, B, C, N ?
Al (dip after Mg)
400

What is Hess' Law

In a chemical reaction, the change of enthalpy is independent of the direction between the initial and final states.

400
Which of these species has an atom with an expanded octet? ozone, triiodide ion, selenium dichloride, arsenic trifluoride
triiodide ion
400

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)

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 science of mapping changes in state variables of a body for the reason of deriving heat transfer, related to the changes in is state due to physical changes, chemical reactions is called


calorimetry

500
Which of these species displays resonance? phosphorus pentachloride, phosphate ion, tetraphosporus decoxide, carbon monoxide
phosphate ion
500

Which of these is a weak acid? C6H12O6, H2SO4, HNO3, HF, HClO4

HF