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A&P CH2 Chemical Basis of Life key terms

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Term
Definition
atom   smallest particle of an element that has the properties of that element  
carbohydrate   organic compound that contains carbon, hydrogen, and oxygen, in a 1:2:1 ratio  
decomposition   the breakdown of molecules into simpler compounds  
electrolyte   a substance that ionizes in water solution  
element   a chemical substance with only one type of atom  
inorganic   chemical substances that lack carbon and hydrogen  
ion   an atom or molecule with an electrical charge  
lipid   a fat, oil, or fat-like compound that usually has fatty acids in its molecular structure  
molecular formula   an abbreviation for the number of atoms of each element in a compound  
molecule   a particle composed of two or more joined atoms  
nucleic acid   a substance composed of bonded nucleotides, RNA or DNA  
organic   carbon-containing molecules  
protein   nitrogen-containing organic compound of joined amino acid molecules  
structural formula   a representation of the way atoms bond to form a molecule, using symbols for each element and lines to indicate chemical bonds  
synthesis   building large molecules from smaller ones that join  


   




 
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