Unit Conversions and Significant Figures
Moles & Avogadro's Number
Energy
Periodic Trends
Electromagnetic Spectrum
Quantum Quest
100
This is the number of significant figures in 0.0009
What is 1?
100
These are two possibilities of units for the Avogadro's number.
What are atoms/, ions/, molecules/, particles/, electrons/, photons/, formula units/mole?
100
The SI unit of energy is derived from these base units.
What is kg*m2/s2 ?
100
As you move left to right across a period, atomic radius generally does this.
What is decrease?
100
Share your favorite pneumonic device for increasing energy in the electromagnetic spectrum.
Here's mine: Raging Martians Invade Venus Using X-Ray Guns
100
This orbital is shaped like a sphere
What is an s orbital?
200
This is the number of significant figures in 50200
What is three?
The trailing zeros are not significant since there is no decimal present.
200
The weight of one mole of iron.
What is 55.845 g?
200
This is the direction that an electron travels in an absorption electron transition.
What is up?
will also accept
What is from low to high energy?
200
As effective nuclear charge increases, electrons are attracted to the nucleus more or less strongly?
What is more strongly?
200
Are you more likely to be harmed by exposure to a microwave or X-ray machine?
Why?
X-ray.
X-ray radiation has higher energy.
200
How many electrons can fit in the n=3 shell?
What is 18 electrons?
300
This is the number of kg in 2.525 μg
What is 2.525 x 10-3 kg?
300
The number of moles of Ca in 1.927 x 1024 atoms of calcium.
What is 3.200 moles?
300
Convert 1.87*1019 eV to Joules.
Hint: 1.602 x 10-19J = 1 eV
What is 3 Joules
300
Which has the larger radius: Na or Na+
What is Na?
300
How are energy and frequency related? Which equation tells you this?
Directly proportional. E=hv
300
This quantum number describes the shape of an orbital.
What is angular momentum?
400
This is the number 003903000 in scientific notation (with correct significant figures)
What is 3.903*106?
400
This is the number of H2O molecules in a snowflake weighing 1 mg.
Hint: The mass of H2O is 18.02 g/mol
What is 3 x 1019 H2O molecules?
400
This is the frequency of a photon that has a wavelength of 420 nm.
What is 7.1x1014Hz?
(units could also be "1/s" or "s-1)
400
This is the isotopic symbol for an element with 71 protons and 104 neutrons.
400
How are energy and wavelength related? How do you know.
Inversely proportional. Wavelength and frequency are inversely proportional.
400
Which set of quantum numbers is not allowed:
Set A: n=3, l = 2, ml=+1, ms = +1/2
Set B: n=2, l = 2, ml=0, ms = -1/2
What is Set B?
500
____ cm3 of water in 30 mL of water.
(hint: 1000 L = 1 m3)
What is 30 (cm3 of water)?
500
The number of moles of copper in a cube of copper metal with an edge length of 1.00 in.
Hint: 1 in = 2.54 cm, density of copper= 8.92 g/cm3
What is 2.30 moles of copper?
500
Bonus (because generally, I would just tell you that this is the frequency): The energy of a photon whose wave peaks pass a given point every 8.00 x 1014 s.
What is 5.30 x 10-19 J?
500
Ne, F-, and Na+ all have the same number of electrons. These species are called?
Which has the smallest radius?
What is isoelectronic?
What is Na+?
500
How do you find wavelength if you know energy?
E=hc/wavelength
500
Write the full and simplified (noble gas) electron configuration for phosphorus.
1s22s22p63s23p3
[Ne]3s23p3