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study guide for physical science and biology final exam

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Atomic number   number of protons  
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Atomic mass   number of protons and neutrons  
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Octet rule   only 8 valence electrons  
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Ionic Bond   a bond between a non-metal and a metal, transfer of electrons  
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Covalent Bond   a bond between 2 non-metals, sharing of electrons  
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pH   percent hydrogen  
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Organic Chemistry   must contain carbon atoms  
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Inorganic Chemistry   does not contain carbon atoms  
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Hydroxyl   -OH, alcohol  
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Carbonyl   =O, aldehydes and ketones  
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Carboxyl   =O and -H, Carboxylic acids  
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Amino   =O and -OH, Amines  
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Sulfhydryl   -SH, thiols  
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Phosphate   PO4-2, organic phosphates  
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Proton   a positively charged subatomic particle  
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Sublimation   the state changes from a solid to a gas  
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Law of Conservation of Mass   mass is neither created nor destroyed in a chemical reaction  
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Isotopes   same element but different number of neutrons  
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Isomers   same chemical formula but different structure  
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Saturated   has only single bonds  
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Unsaturated   has at least 1 double or triple bond between the carbons  
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hydrocarbons   organic molecules containing only H and C  
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Polymer   large molecule consisting of many subunits  
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Monomer   1 subunit  
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macromolecules   large organic polymer  
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Condensation or Dehydration Synthesis   remove water to make polymers  
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Hydrolysis   add water to break polymers  
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exergonic   release energy  
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endergonic   absorb energy  
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Carbohydrates   molecules that store energy and are used as building materials, have 20-30 monosaccharides  
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Monosaccharides   single sugar, may have 3-8 carbons  
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disaccharides   double sugar  
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polysaccharides   many sugars (8-1000)  
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cellulose   major component of plant cell walls  
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chitin   polymer of an amino sugar  
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Proteins   large 3D macromolecules responsible for most cellular functions  
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Enzymes   catalysis that speed up a chemical reaction  
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Conformation   the 3D shape of a protein is determined by its amino acid sequence  
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Denaturation   process which alters native conformation  
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Nucleic Acids   store and transmit hereditary information for all living things, DNA and RNA  
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Gene   a specific segment of a DNA molecule with information for a cell to make 1 polypeptide  
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Lipids   fats, phospholipids, and steroids  
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Activation Energy   minimum energy needed to start a chemical reaction  
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