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by BlastRoom
Practice connecting electron transitions, photons, and bright-line spectra.
#chemistry
20 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
Use the bright-line spectra. Which reference is the same element as the unknown?
Compare the unknown spectrum with the references. Which reference matches the unknown element?
Use the emission spectra shown. Which reference identifies the unknown?
The unknown sample produces the spectrum shown. Which reference is the same element?
Look at the unknown and reference spectra. Which reference has the same set of bright lines?
Use the spectra to identify the unknown element. Which reference should be chosen?
A student compares these spectra from gas discharge tubes. Which reference matches the unknown?
Use the bright-line spectra. Which reference is the best match for the unknown sample?
An electron in an excited atom drops from n = 5 to n = 2. What is produced?
Light shines on an atom, and an electron moves from n = 2 to n = 4. What happened to the photon energy?
In a flame test, an excited metal ion gives off colored light as its electrons return toward the ground state. Which event causes the color?
In a Bohr-style energy-level diagram, an electron drops from n = 3 to n = 1. How is the energy of the emitted photon related to the levels?
An atom absorbs a photon with exactly the energy gap between two electron levels. Which electron change can occur?
Blue light has a wavelength of about 450 nm, and orange light has a wavelength of about 600 nm. Which statement is correct?
Two photons have frequencies of 6.0 × 1014 Hz and 4.0 × 1014 Hz. Which photon has more energy and a shorter wavelength?
Red light is about 700 nm, green light about 530 nm, and violet light about 410 nm. Which order goes from lowest photon energy to highest?
Two hydrogen emission lines are at 486 nm and 656 nm. Both come from electrons dropping to n = 2. Which line comes from the higher starting level?
If a photon's wavelength is doubled, what happens to its frequency and energy?
Why do different elements produce different bright-line emission spectra?
A reference spectrum and an unknown spectrum share one bright line, but the other lines do not match. Why is one shared line not enough to identify the element?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
Element Symbols and Names
50 questions
