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lesson 1/2
| Term | Definition |
|---|---|
| matter | any material that has and occupies space |
| atom | basic unit of matter, the smallest unit maintains the chemical properties of an element |
| element | chemical substance with a unique set of properties that cannot be broken down into substance with other properties |
| nucleus | central core of an atom |
| molecule | combination of two or more atoms |
| compound | substance combining atoms of tow or more different elements |
| hydrocarbon | organic compound combining hydrogen and carbon |
| solution | mixture with all ingredients evenly distributed |
| macromolecule | a large organic molecule includes proteins nuceleric acids and carbohydrates |
| protein | organic compound made up of carbon oxygen hyrdrogen nitrogen and sometimes sulfur |
| nuleric acid | macromolecule that carries hereditary info includes DNA |
| carbohydrate | an organic compound that consists of atoms of carbon hydrogen and oxygen |
| liquid | chemically diverse compound that does not dissolve in water |
| feedback loop | circular process that describes how an event is both a cause and effect in the same system |
| erosion | the removal of soil by water |
| geosphere | all the rock and below Earth's surface |
| lithosphere | sphere of earth made up of hard rock on and just below Earth's surface and the outermost layer |
| biosphere | the earth and all its enviormengs |
| atmosphere | thin layer of gases that surrounds earth |
| hydrosphere | all of the water |