5 Questions
What is an atom?
An atom is the basic unit of matter. It consists of a nucleus, which contains protons and neutrons, and electrons orbiting around the nucleus.
Differentiate between atomic # and atomic mass.
Atomic number represents the number of protons in an atom's nucleus, while atomic mass represents the total number of protons and neutrons in the nucleus.
What do columns (groups) tell us about the periodic table?
Columns, or groups, represent elements with similar chemical properties and valence electron configurations.
Why would alkali metals react violently with halogens (the fluorine group)?
Alkali metals have one valence electron that they want to lose, while halogens have seven valence electrons that they want to gain. This creates a strong driving force for a reaction between the two groups.
What is special about the noble gases?
Noble gases have a full outer electron shell, making them stable and unreactive.
Test your knowledge on lab safety rules, atomic structure, and the periodic table in this quiz. Learn about atoms, their components (protons, neutrons, and electrons), the difference between atomic number and atomic mass, and how to draw atoms using Bohr and Lewis models. Understand the significance of numbers like 2, 8, 8, and discover what columns (groups) and rows (periods) tell us about the periodic table. Explore the reasons behind the violent reactions of alk
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