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ChemistryThe Periodic Table of Elements I
The modern periodic table is based on Dmitri Mendeleev’s 1896 observations that chemical elements can...
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BiologyInheritance
Inheritance patterns have been of interest since ancient times, but it was Gregor Mendel's work...
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ChemistryProperties of Gases
This module describes the properties of gases and explores how these properties relate to a...
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