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15 Cards in this Set
- Front
- Back
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Who was the French chemist who grouped the known elements into metals, non-metals, gases, and earths in 1789?
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Antoine Lavoisier
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Who came up with the first periodic table in the 1860s?
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Mendeleev
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An arrangement of elements in columns, based on a set of properties that repeat from row to row
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periodic table
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What did Mendeleev predict about the gaps that he left in his periodic table?
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They would be filled by new elements that had not yet been discovered.
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In the modern periodic table, elements are arranged by increasing ________.
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atomic number
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Each row in the periodic table is called a _____.
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period
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How many periods are there in the periodic table?
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7
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Each column in the periodic table is called a _____.
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group
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How many groups are there on the periodic table?
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18
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The properties of elements repeat in a predictable way when atomic numbers are used to arrange elements into groups. This is the ______.
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periodic law
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Name 1 of the 4 pieces of information about each element that are typically in each square on the periodic table?
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the name of the element
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Name 1 of the 4 pieces of information about each element that are typically in each square on the periodic table?
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symbol
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Name 1 of the 4 pieces of information about each element that are typically in each square on the periodic table?
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atomic number
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Name 1 of the 4 pieces of information about each element that are typically in each square on the periodic table?
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atomic mass
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The mass of one atom of the element, on average, is called the _____.
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atomic mass
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