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| T/F Chemical reactions alter atomic bonds? |
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| In theory, all reactions are _______ |
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| Energy is measured in calories: 1 cal raises 1g H20 1degrees. 1 dietary Calories is = ___calories (kcal) |
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| Carbon is important because? |
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| They are the most versatile atom on Earth b/c of its four valence electrons, carbon can form many covalent bonds.Also, carbon-containing molecules can form a limitless array of molecular shapes with different combinations of single and double bonds. |
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| Each carbon atoms forms___ covalent bonds! |
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| molecules that have the same molecular formula and molecular weight but a different arrangement of atoms! |
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| different in the order which their atoms are attached. |
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| different in the arrangement of atoms around a double bond. |
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| different in spatial arrangements around an asymmetric carbon atom and are mirror images of one another. |
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| An asymmetric carbon atom is ? |
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| one that is attached to four different atoms or groups of atoms. |
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| T/F All three types of isomers result in molecules with different chemical properties and different biological activities. |
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| T/F functional groups on organic molecules determine their chemical properties. |
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| T/F"R"group can be any hydrocarbon chain |
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| Amino and carboxyl groups functions are? |
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| to attract or lose a proton, respectively |
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| What group is the sites of reactions that link molecules into larger, more complex compounds? |
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| What groups acts as weak acids? |
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| What group has two negative charges? |
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| What groups links molecules via disulfide bonds? |
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| Functional groups on organic molecules can used to link them through____reactions or separate them by ____ reactions. |
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| A strong acid example would be? |
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| HCl because it completely ionizes to release H+ and Cl- and thereby increase the H+ concentration in solution., |
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| T/F Ionization of strong acids is essentially irreversible |
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| A strong base also ionizes completely to release Na+ and OH- so this is also__? |
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| T/F Organic Acids Tend to be weak acids! |
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| An example of a weak acid is ? |
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| carbonic acid, because it only partially ionizes to release H+ and HCO3- (bicarbonate) ions. |
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