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CH 1 Vocab

Scientific Method

TermDefinition
matter any material that has mass and occupies space, 64
atom the basic unit of matter; the smallest unit that maintains the chemical properties of an element, 64
element a chemical substance with a unique set of properties that cannot be broken down into substances with other properties, 64
nucleus the central core of an atom; consists of protons and neutrons, 65
molecule a combination of two or more atoms, 66
compound a substance combining atoms of two or more different elements, 66
hydrocarbon an organic compound combining hydrogen and carbon, 66
solution a mixture in which all the ingredients are evenly distributed, 67
macromolecule a large organic molecule; includes proteins, nucleic acids, carbohydrates, and lipids, 67
protein an organic compound made up of carbon, oxygen, hydrogen, nitrogen, and sometimes sulfur, 67
nucleic acid the macromolecule that carries hereditary information; includes DNA and RNA, 68
carbohydrate an organic compound that consists of atoms of carbon, hydrogen, and oxygen, 68
lipid chemically diverse compound that does not dissolve in water, 69
pH a measure of the acidity or alkalinity (basicity) of a solution, 71
feedback loop a circular process that describes how an event is both a cause and an effect in the same system; can be a positive feedback loop or a negative feedback loop, 73
erosion the removal of soil by water, wind, ice, or gravity, 74
geosphere all of the rock at and below Earth's surface, 74
lithosphere sphere of Earth made up of the hard rock on and just below Earth's surface; the outermost layer of both Earth and its geosphere, 74
biosphere the Earth and all of its organisms and environments, 74, 102
atmosphere the thin layer of gases that surrounds Earth, 74, 452
hydrosphere all of the water-salt water and fresh water, in the form of liquid,ice, or vapor-above and below Earth's surface and in the atmosphere, 74
Created by: sarah1233335
 

 



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