Chemical reaction, an Uncommon card

The card carries these facts from its Wikipedia article.

• When chemical reactions occur, the atoms are rearranged and the reaction is accompanied by an energy change as new products are generated.
• Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei, and can often be described by a chemical equation.
• Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Chemical reaction article was read about 150,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 80 and blocks with 82: each hit it takes is cut by 33 %.

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.

The cards just above and just below Chemical reaction in the power ranking, all domains together.