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Moles
Electron Configurations
Atomic Structure
Periodic Trends
Grab Bag
100
What is Avogadro's Number?
6.02 x 10^23
100
The maximum number of electrons within the second valence shell ONLY
8 electrons
100
Which scientist discovered electrons?
Thomson
100
Which is the only periodic trend that does not go in the direction of all the others?
Atomic radius
100
carbon-12, carbon-13, and carbon 14 are examples of
Isotopes
200
You can convert grams of an element or a compound into moles by using this conversion factor
Molar mass
200
How many valence electrons does sulfur have?
6 valence electrons
200
Who proposed the plum pudding model?
Thomson
200
Which periodic trend illustrates the energy required to remove an electron?
Ionization energy
200
Of all of the intermolecular forces, which is the strongest?
Hydrogen bonding
300
I have 343grams of silicon. How many moles do I have?
12.2 moles
300
Write the electron configuration for Al 3+
[Ne] or 1s2 2s2 2p6
300
An neutral element has 46 electrons and 47 neutrons. Which element is it?
Palladium-93
300
Write the following species in order from largest to smallest: O2-, S2-, F-, Cl-, Ne, Ar
S2-, Cl-, Ar, O2-, F-, Ne
300
What is the formula for iron (III) carbonate?
Fe2(CO3)3
400
You have a 0.05L sample of mercury, which has a density of 13.5g/mL. How many atoms of mercury do you have?
2.03 x 10^24 atoms
400
10) Consider the electron configuration for 1s2 2s2 2p5 3s1. Does this violate any rules? If so, which rule does it violate and why?
Aufbau principle
400
How many protons, electrons, and neutrons are present in an atom of copper-64 and has a positive 2 charge?
protons = 29, neutrons = 35, electrons =27
400
Arrange the following elements in order of increasing atomic size: Ga, Ge, Al, Si, Sn, In, and P
P, Si, Al, Ge, Ga, Sn, In
400
What is the difference between accuracy and precision?
Accuracy- how close the measurement is to the true value Precision- exactness of measurement
500
I have 3.34 x 10^25 atoms of silver. I have a buyer who will pay 25 cents per gram of silver. If I sold 80% of my silver, how much money would I make?
$1196.54
500
Write the electron configuration for Cr
[Ar]4s13p5
500
Who discovered the nucleus and how did he do it? Explain the set up
Rutherford. He shot alpha particles at a thin sheet of gold and he recorded where they hit.
500
Describe effective nuclear charge
Attraction between valence electrons and the nucleus
500
What is the difference between a hypothesis, law, and theory?
Hypothesis predicts, law describes, theory explains