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chapter 1--2

chapter 3 vocab

TermDefinition
matter all material in the universe that has mass occupies spaces
atom the basic unit of matter; the smallest unit that maintains the chemical properties of an element
element a chemical substance with a given set of properties that cannot be broken down
nucleus the central core of an atom consists of protons and neutrons
molecule a combination of two or more atoms
compound a substance combing atoms of two or more different elements
hydrocarbons an organic compound combining hydrogen and carbon
solution a mixture in which all the ingredients are evenly distrubted
macromolecules a large organic molecules includes proteins nucleic acids carbohydrates and lipids
proteins an organic compound made up of carbon ,oxygen,hydrogen,nitrogen,and sometimes
nucleic acids the macromolecule that carries hereditary information includes DNA and RNA
carbohydrates an organic compound that consists of atoms of carbon, hydorgen, and oxygen
lipids chemically diverse compound that does not dissolve in water
pH a measure of the acidity or alkalinity of solution
feedback loop a circular process that describes how an event is both a cause and effect in the same system can be a positive feedback loop or negative feedback loop
geosphere all of the rock at and below earth surface
lithosphere sphere of earth made up of the hard rock on just below earth surface
biosphere the earth and all of its organisms and environment
erosion the removal of soil water,wind,ice,or gravity
atomsphere the thin layer of gases that surrounds earth
hydrosphere all of the water salt water and fresh water,in the form of liquid,ice or vapor
Created by: user-1978904
 

 



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