60 a system in which both matter and energy can move

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60.A system in which both matter and energy can move in or out is called a(n) ____________________ system.61.An ideal system in which neither matter nor energy can move in or out is a(n) ____________________ system.62.A system in which energy and not matter can move in or out is a(n) ____________________ system.63.A _________________________ is a device in which a fuel is burned inside an insulated container to obtain accurate measurements of heat transfers during chemical reactions.64.Chemical systems have both ____________________ and ____________________ forms of energy.65.The enthalpy change per mole of a substance undergoing a change is called the ____________________.
66.A ____________________ change typically has enthalpy changes in the range 67.A enthalpy change in the kJ/mol probably was a ____________________ change.68.A ____________________ change has a typical enthalpy change in the kJ/mol69.The magnitude of the energy change from a nuclear change is the result of ____________________ equation.70.Enthalpy changes for exothermic reactions are given a ____________________ sign.71.An enthalpy change for an endothermic reaction are given a ____________________ sign.72.This statement, "The total energy change of the chemical system is equal to the total energy change of the surroundings" is based on the ________________________________________.73.A chemical equation that includes the energy term involved in the reaction is called a ____________________ equation.74.A _________________________ diagram is a graphical representation of the energy transferred during a physical or chemical change.75.____________________ states: The value of the for any reaction that can be written in steps equals the sum of the values of for each of the individual steps.76.A ____________________ reaction is a reaction in which compounds are formed from their elements.77.The standard enthalpy of formation of an element already in its standard state is ____________________.78.The most widely used nuclear reaction is the ____________________ of uranium into two smaller nuclei.79.The potential energy of the products is ____________________ than the potential energy of the reactants in an exothermic reaction.80._________________________ is the study of ways to make chemical reactions go faster or slower.81.A _________________________ is obtained by measuring the rate of product formation or the rate at which areactant is consumed.82.The rate of reaction over a period of time is the _________________________.83.The rate at any particular point in time is known as the _______________________________.84.The concentration of a product during the progress of a reaction increases ____________________.85.The rate of consumption of a reactant is fastest at the ____________________ of the reaction86.The rate of a reaction that produces ions can be measured by measuring the change in its ____________________.87.The rate of the reaction of sodium, silver and gold with gases in the air is different due to ___________________________________.88.Chlorophyll, in the reaction of photosynthesis, plays the role of a ______________________.89.A rate at which a solid reactant is consumed can be increased by increasing the ________________________ of the solid90.An automobile's _________________________ increases the rate of oxidation of exhaust gases..
91.An enzyme, a protein in living cells, acts like a _________________________ to control the rate of a specificbiochemical reaction.92.The rate, r, will always be _________________________ the product of the initial concentrations of the reactants raised to some exponential value.

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