History of the Periodic Table
Chemistry ⇒ Atomic Structure and the Periodic Table
History of the Periodic Table starts at 8 and continues till grade 12.
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Describe how the discovery of noble gases affected the periodic table.
Describe one major difference between Mendeleev’s periodic table and the modern periodic table.
Describe the main contribution of Glenn Seaborg to the periodic table.
Explain the Law of Octaves proposed by John Newlands.
Explain why Mendeleev sometimes placed elements out of order of increasing atomic mass.
Explain why the discovery of isotopes posed a challenge to Mendeleev’s periodic table.
Explain why the periodic table is considered a predictive tool in chemistry.
Name one element that was discovered after Mendeleev’s periodic table and fit into a gap he had left.
In what year did Dmitri Mendeleev publish his periodic table? (1) 1789 (2) 1869 (3) 1911 (4) 1962
What was the main limitation of Newlands’ Law of Octaves? (1) It only worked for the first 20 elements (2) It was based on atomic number (3) It included noble gases (4) It was a three-dimensional model
Which of the following best describes the periodic law? (1) Properties of elements repeat every 8 elements (2) Properties of elements are a periodic function of their atomic numbers (3) Elements are arranged by increasing density (4) Elements are grouped by color
Which of the following is NOT a reason why Mendeleev’s periodic table was accepted? (1) It predicted new elements (2) It explained chemical properties (3) It was arranged by atomic number (4) It left gaps for undiscovered elements
Fill in the blank: Mendeleev predicted the properties of the element _________, which was later discovered and named gallium.
Fill in the blank: The first periodic table included only about _______ elements.
Fill in the blank: The horizontal rows in the periodic table are called __________.
Fill in the blank: The modern periodic table includes more than _______ elements.
True or False: Mendeleev arranged the elements in his periodic table in order of increasing atomic number.
True or False: Mendeleev left gaps in his periodic table for undiscovered elements.
True or False: Mendeleev’s periodic table could explain the position of isotopes.
True or False: The periodic law states that the properties of elements are a periodic function of their atomic numbers.
