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WikiCards · Card list · Science cards · Liquid hydrogen
Uncommon card · Science
Liquid hydrogen, an Uncommon card
Liquid hydrogen is the liquid state of the element hydrogen.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 61
- DEF
- 51
- Power
- 112
- Wikipedia reads a year
- 68,000
Power 112 (ATK + DEF): stronger than 50 % of WikiCards cards.
Liquid hydrogen quiz: 3 questions
Three questions on the Liquid hydrogen card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Hydrogen is found naturally in the ______ H2 form.
Answer
molecular. Hydrogen is found naturally in the molecular H2 form. From the Liquid hydrogen article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Internal energy. Internal energy 71 · Josephus problem 67 · Scalpel 64 · Liquid hydrogen 61 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- Hydrogen is found naturally in the molecular H2 form.
- To exist as a liquid, H2 must be cooled below its critical point of 33 K. However, for it to be in a fully liquid state at atmospheric pressure, H2 needs to be cooled to 20.28 K.
- A common method of obtaining liquid hydrogen involves a compressor resembling a jet engine in both appearance and principle.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Liquid hydrogen article was read about 68,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 61 and blocks with 51: each hit it takes is cut by 20 %.
How to get Liquid hydrogen
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Liquid hydrogen in the power ranking, all domains together.
- Internal energyUncommon · Science · ATK 71 DEF 41
- ScalpelUncommon · Science · ATK 64 DEF 48
- FadUncommon · Science · ATK 60 DEF 52
- Seto Inland SeaUncommon · Nature · ATK 65 DEF 47
- Barrel racingUncommon · Society · ATK 63 DEF 49
- Friendly'sUncommon · Society · ATK 66 DEF 46
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
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- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Liquid hydrogen (revision), CC BY-SA 4.0. Photo : Uncredited/DOE, Public domain, Wikimedia Commons.
