STEAM ACHIEVEMENTS DATABASE |
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Very simple (71%): | Very folding (23%): |
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Hydrogen is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Hydrogen is the chemical element with the symbol H and atomic number 1. |
--- | 70.7% |
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It is a soft, silvery-white alkali metal. Lithium is a chemical element with the symbol Li and atomic number 3. |
--- | 56.2% |
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It is a soft, silvery-white, highly reactive metal. Sodium is a chemical element with the symbol Na and atomic number 11. |
--- | 42.1% |
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Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Potassium is a chemical element with the symbol K and atomic number 19. |
--- | 38.5% |
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Caesium has physical and chemical properties similar to those of rubidium and potassium. Caesium is a chemical element with the symbol Cs and atomic number 55. |
--- | 33.2% |
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It is commonly known as quicksilver and was formerly named hydrargyrum. Mercury is a chemical element with the symbol Hg and atomic number 80. |
--- | 32.8% |
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It is a gray post-transition metal that is not found free in nature. Thallium is a chemical element with the symbol Tl and atomic number 81. |
--- | 32.2% |
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Lead is soft and malleable, and also has a relatively low melting point. Lead is a chemical element with the symbol Pb (from the Latin plumbum) and atomic number 82. |
--- | 31.3% |
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Elemental bismuth may occur naturally, although its sulfide and oxide form important commercial ores. Bismuth is a chemical element with the symbol Bi and atomic number 83. |
--- | 30.2% |
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Polonium was named after Marie Curie's homeland of Poland. Polonium is a chemical element with the symbol Po and atomic number 84. |
--- | 24% |
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The bulk properties of astatine are not known with any certainty. Astatine is a radioactive chemical element with the symbol At and atomic number 85. |
--- | 23.1% |
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