Streak · 7 days+185 XP
7-Day Chemistry Word Streak
Learn one chemistry term each day, starting with ether, and write a one-line definition. Check in daily.
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Science · Facts & stats · iChallenge network
The Ether Challenge
Daily facts and stats about ether in chemistry and physics, plus real challenges to put them to work.
Warm-up questionNot ranked · tap an answer
Which best describes diethyl ether?
Diethyl ether evaporates quickly and its vapor ignites easily.
Level1Rookie
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Streak0days
LeagueBronzeweekly
Daily #4Resets at midnight UTC
Today's round
- 5 questions
- 20s each
- 0 played today
One ranked attempt per day. Practice as much as you like.
Challenges
Join one, log your days or post your proof. Finishing earns XP and the Finisher badge.
Proof+250 XP
Draw a Molecule
Draw the structure of dimethyl ether and label its oxygen and carbon atoms. Post a photo link.
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Proof+250 XP
Explain Michelson-Morley
Write a short, simple summary of the 1887 experiment that searched for the aether. Post the write-up.
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By the numbers
Live counts from EtherChallenge.com. All arena stats →
Facts in the pack12
Visitors, 30 days32
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First RoundFinish your first daily round.
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UnbreakablePlay 30 days in a row.
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In the ArenaJoin your first challenge.
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Questions
Is this financial advice?
No — knowledge games only. Nothing here is financial advice.
Are there prizes?
Only when a sponsor funds a prize. Funded prizes and their rules are shown on the challenge card; otherwise you play for rank and badges.
How does the daily round work?
Everyone on this arena gets the same five questions each day, from easy to hard. You get one ranked attempt; practice rounds are unlimited.
How is my score calculated?
100 points per correct answer, up to 50 more for answering quickly, a combo multiplier for answers in a row, and 150 bonus points for a perfect round.
Is it free?
Yes. Playing, streaks, badges and leaderboards are free. Some challenges carry a sponsor-funded prize; the challenge card shows it when one is funded.