10 Questions
Elements in the same group tend to show similar chemical characteristics. Vertical, horizontal and diagonal trends characterize the periodic ______
table
The periodic table is divided into four roughly rectangular areas called ______
blocks
The first periodic table to become generally accepted was that of the Russian chemist Dmitri ______ in 1869
Mendeleev
The table is an icon of chemistry and is widely used in physics and other ______
sciences
The periodic law was recognized as a fundamental discovery in the late 19th ______
century
Match the following characteristics with the correct description:
Metallic character = Increases going down a group and decreases from left to right across a period Nonmetallic character = Increases going from the bottom left of the periodic table to the top right Periodic law = Dependence of chemical properties on atomic mass Dmitri Mendeleev = Formulated the periodic law as a dependence of chemical properties on atomic mass
Match the following statements with their correct description:
Periodic table = Arranges the chemical elements into rows and columns based on their atomic numbers Atomic numbers = Used to arrange the elements in order and show an approximate recurrence of their properties Approximate recurrence of properties = Evident when the elements are arranged in order of their atomic numbers Blocks in the periodic table = Four roughly rectangular areas used to categorize the elements
Match the following with their role in explaining the periodic law:
Discovery of atomic numbers = Helped understand the internal structure of the atom and validate the periodic law Quantum mechanics = Pioneering work in this field served to illuminate the internal structure of the atom and support the periodic law Gaps in Mendeleev's periodic table = Successfully used by Mendeleev to predict properties of some missing elements, supporting his formulation of the periodic law Missing elements in Mendeleev's table = Predicted properties using the periodic law, contributing to its recognition as a fundamental discovery
Match the following with their role in chemistry and physics:
Periodic table = Widely used in physics and other sciences as an icon of chemistry Vertical, horizontal, and diagonal trends = Characterize the periodic table and help understand chemical and physical properties of elements Similar chemical characteristics in same group = Demonstrates trends in reactivity and behavior within the elements Metallic character trend = Provides insights into how reactivity changes within groups and across periods
Match the following with their role in chemistry history:
Late 19th century discovery = Recognition of the periodic law as a fundamental discovery Early 20th century explanation = Discovery of atomic numbers and pioneering work in quantum mechanics served to explain the periodic law Mendeleev's contribution = Formulated the periodic law, used it to predict properties of missing elements, and created a widely accepted periodic table Internal structure of atoms = Illuminated by discoveries supporting and explaining the periodic law
Test your knowledge of the periodic table with this quiz! Explore the arrangement of elements, the periodic law, and the properties of elements within the table.
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