Esoteric Element Etymology
Paint, Art, Pigments and Chemistry
Confusing Calculations
Systematic, Random, Both or Neither?
FINAL JEOPARDY
200
The element californium (Cf) is named after which US state where it was discovered in 1950.
What is California?
200
Pompompurin is a yellow dog that does not emits any light. Theoretically, what colour(s) does pompompurin absorb?
What is Blue/Violet or What is Blue?
200
A light with a wavelength of 1.215×10−07m. What is the frequency of the light in Hz?
What is 2.467*10^15 Hz?
200
Errors in measurements of temperature due to poor thermal contact between the thermometer and the substance whose temperature is to be found,
What is systematic?
400
This element's symbol comes from the word "Ferrum" for firmness. It is one of the cheapest and most abundant of all metals. It is used in the production of steel.
What is Iron?
400
This phenomenon is responsible for the different colours present in transition metal complexes. (3 Words)
What is Crystal Field Splitting?
400
What is the average atomic mass of Neon, given that it has 3 isotopes with the follow percent abundances;
20Ne = 19.992 amu (90.51%)
21Ne = 20.993 amu (0.27%)
22Ne = 21.991 amu.
DONT FORGET YOUR UNITS.
400
Reaction time.
What is random error?
600
The name derives from the Greek osme for "smell" because of the sharp odor of its volatile oxide. This element and iridium were discovered simultaneously in a crude platinum ore by the English chemist Smithson Tennant in 1803.
What is Osmium?
600
Venetian Ceruse or Venetian White was used as a skin whitener. It is derived from hydrocerussite. Elizabeth I's death is related to chronic poisoning from this pigment, along with mercury and arsenic.
The paint has the general formula 2MCO3·M(OH)2. What transition metal is M?
Hint: This metal can be used in soldering and stained glass.
What is Pb?
600
What are the formal charges in Carbon Dioxide, CO2?
What is 0?
600
Calibrating an instrument is done to reduce this type of error.
What is systematic error?
800
This synthetic element (element number >100), is named after an Asian country. (It's the first element discovered in an Asian country!)
What is Nihonium?
800
Hydrogen absorbs light at 435nm.
tetrahedral tetrachlorocobaltate(II) ion, [CoCl4]2- absorbs at 720 nm (~Yellow/Red Region).
What colours do you see for each?
Note: You must identify the observed colours for each one.
What is Purple (Hydrogen) and Purple (Transition Metal)?
https://www.docbrown.info/page06/spectra/0uv-visible-spectra-01co.htm
800
What colour will an octahedral complex appear if it has a Δo= of 3.75×10−19J?
What is Red?
Using Δ=hc/λ, h=6.626*10-34J*s, c=2.998*108m/s, the wavelength would equal 530 nm. So green is absorbed, and the complementary colour of green is red, so red is the colour of the complex.
800
Errors arising from the environment (ie. Air temperature, air pressure, humidity and vibrations).
What is both?
1000
This transition metal's name means 'heavy stone' in Swedish. Its symbol is derived from wolfram (or volfram) wolframite, which is derived from German wolf rahm ('wolf soot, wolf cream').
This name could also be translated into English as 'wolf's froth' and is a reference to the large amounts of tin consumed by the mineral during its extraction, as though the mineral devoured it like a wolf.
What is Tungsten?
1000
"Ultra paints"
A barium sulphate-based paint has the Guinness world record of being 98.1% reflective.
A carbon nano tube array paint is reported to absorb 99.965% of visible light.
What colours are associated with each one? Which would you use to paint a winter jacket?
What is White and Black? What is Black (answer, variable)?
1000
A particular brand of gasoline has a density of 0.737 g/mL at 25 °C. (a) How many grams of this gasoline would fill a 16.0 gal tank? TO THE CORRECT AMOUNT OF SIG FIGS.
Note: the 3.78541 L / 1 US gal conversion.
What is 4.46 x 104 g (rounded to three sig figs) 1 US gal 1 L 1 mL
6.0 US gal 3.78541 L 1000 mL 0.737 g ––––––––– x –––––––– x ––––––– x –––––– =
1000
You measure wrist circumference using a tape measure. But your tape measure is only accurate to the nearest half-centimeter, so you round each measurement up or down when you record data.
What is random error?
1000
The wavelength of the light emitted by a hydrogen atom when the electron falls from a high energy (n = 4) orbit into a lower energy (n = 2) orbit is absorbed by a transition metal complex.
Determine:
What is the wavelength of the light emitted?
What wavelength will the transition metal complex absorb?
What colour is observed for the transition metal complex?
Are the ligands high spin or low spin?
Are the ligands more likely to be F- or CN-?
What is 486.3nm, 486.3nm, observe red/red-orange, low spin. More likely to be CN-
Step 1:
486.3 nm
The Hydrogen atom emits in the blue line in the visible spectrum of the hydrogen atom.
The metal will absorb 486.3nm
Step 2.
The complimentary colour to blue is red/reddish orange
Step 3:
486nm is on the higher energy wavelengths of the visible spectrum. Higher energy gaps are caused by stronger ligands. Stronger ligands create a larger crystal field ligand split (Δo). Low spin= higher energy gap.
