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 one way in which the periodic table has changed since its original creation.
Describe the contribution of Glenn Seaborg to the periodic table.
Describe the main difference between Mendeleev's periodic law and the modern periodic law.
Describe the main idea behind Döbereiner's triads.
Explain how the periodic table helps in predicting the properties of elements.
Explain the significance of Henry Moseley's work in the development of the periodic table.
Explain why Mendeleev sometimes reversed the order of elements in his table.
Explain why the discovery of noble gases required a modification of the periodic table.
Which element's discovery validated Mendeleev's prediction of an undiscovered element he called 'eka-silicon'? (1) Germanium (2) Gallium (3) Scandium (4) Technetium
Which of the following best describes the arrangement of elements in the modern periodic table? (1) By increasing atomic mass (2) By increasing atomic number (3) By alphabetical order (4) By density
Which of the following best explains why the periodic table is called 'periodic'? (1) Elements repeat at regular intervals (2) Elements are arranged by mass (3) Elements are grouped by color (4) Elements are arranged alphabetically
Which of the following elements was NOT known at the time of Mendeleev's periodic table? (1) Gallium (2) Helium (3) Iodine (4) Iron
Fill in the blank: Mendeleev left gaps in his periodic table for ________ elements.
Fill in the blank: The actinide series was added to the periodic table in the ________ century.
Fill in the blank: The first periodic table was published in the year ________.
Fill in the blank: The modern periodic table is divided into rows called ________ and columns called ________.
True or False: Mendeleev's periodic table could explain the existence of isotopes.
True or False: The discovery of noble gases led to the addition of a new group in the periodic table.
True or False: The modern periodic table is arranged in order of increasing atomic number.
True or False: The periodic table can be used to infer the electronic configuration of elements.
