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Elements: Chemical Symbols and Isotopes02:31

Elements: Chemical Symbols and Isotopes

A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol is used to indicate one atom of mercury (microscopic domain) or to label a container of many atoms of the element mercury (macroscopic domain).
Some symbols are derived from the common English name of the element; others are abbreviations of the name in another language — Latin, Greek or German. For example, the symbol for aluminum (common...
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Chemistry of Compounds01:26

Chemistry of Compounds

Chemistry of CompoundsA chemical compound is a substance made up of two or more different elements that are chemically bonded together. When elements combine to form compounds, their atoms rearrange, resulting in new physical and chemical properties distinct from those of the individual elements.Science and Engineering Practices (SEP): Analyzing and Interpreting DataScientists create models of compounds to show how atoms bond and how molecular shapes affect their properties. Scientists can...
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Nuclear Transmutation03:20

Nuclear Transmutation

Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
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Chemical Symbols01:09

Chemical Symbols

A chemical symbol is an abbreviation that is used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. We use the same symbol to indicate one atom of mercury (microscopic domain) or to label a container of many atoms of the element mercury (macroscopic domain).
Some symbols are derived from the common name of the element; others are abbreviations of the name in another language. Most symbols have one or two letters, but three-letter symbols have been used...
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Synthesis Reaction01:27

Synthesis Reaction

Synthesis ReactionA synthesis reaction is a type of chemical reaction in which two or more simple substances combine to form a more complex product. The general form of a synthesis reaction is: A + B → ABwhere A and B are reactants, and AB is the newly formed compound. Synthesis reactions are fundamental to many natural and industrial processes, including the formation of compounds essential to life and the production of materials like...
Chemical Properties of Matter01:28

Chemical Properties of Matter

Chemical Properties of MatterChemical properties describe how a substance can change into a different substance through a chemical reaction. These properties include reactivity, flammability, toxicity, and acidity. By exploring chemical properties, you can learn how substances interact and transform during chemical reactions.By studying chemical properties, we can understand how substances mix and change. Scientists use this knowledge to create new materials, medicines, and energy sources.
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