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Stack #1238059
| Term | Definition |
|---|---|
| continental drift | A theory stating that the Earth's continents have been joined together and have moved away from each other at different times in the ... |
| semiconductors | A solid substance that has a conductivity between that of an insulator and that of most metals, either due to the addition of an... |
| atom | 1.The basic unit of a chemical element. 2.Such particles as a source of nuclear energy: "the power of the atom". |
| electrical conductivity | 1. The ability or power to conduct or transmit heat, electricity, or sound. 2. The conductance of a material. 3. |
| alkaline-earth metals | are a group of chemical elements in the periodic table with very similar properties. They are all shiny, silvery-white, somewhat reactive ... |
| covalent bond | as used in chemistry, chemical engineering, and physics |
| law of conservation of mass | a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system. |
| universal solvent | hypothetical universal solvent once sought by alchemists |
| pure substance | In chemistry, a chemical substance is a material with a specific chemical composition |
| lanthanides | Any of the series of fifteen metallic elements from lanthanum to lutetium in the periodic table. |
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