Unit Conversions and Significant Figures
Moles & Avogadro's Number
Energy
Periodic Table
Electromagnetic Spectrum
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
The name of the second group on the periodic table.
What is the alkaline earth metal group?
100
Share your favorite pneumonic device for increasing energy in the electromagnetic spectrum.
Here's mine: Raging Martians Invade Venus Using X-Ray Guns
200
The name of three SI units.
What are (1) second, s, for time, (2) meter, m, for length, (3) kilogram, kg, for mass, (4) ampere, A, for electric current, (5) kelvin, K, for thermodynamic temperature, (6) mole, mol, for amount of substance, and (7) candela, cd, for luminous intensity.
200
The weight of one mole of iron.
What is 55.845 g?
200
This is the term for the distance between wave peaks.
What is wavelength?
200
This is the only element in its group that is not an alkali metal.
What is hydrogen?
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.
300
This is the number of kg in 2.525 mg
What is 2.525 x 10-6 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
The name for type A elements.
What are main group elements?
300
How are energy and frequency related? Which equation tells you this?
Directly proportional. E=hv
400
The number 003903000 in scientific notation.
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.
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
Bonus question!!
This is the name of the periodic table group that has the property of fluorescence.
What is the noble gas group?
500
How do you find wavelength if you know energy?
E=hc/wavelength