CHEM 7 PT Word Scramble

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Term	Definition
thermochemistry	The branch of chemistry that studies the heat transfers that accompany chemical or physical changes
Factors that affect reaction rate	the temperature of the system, the concentration of the reactants, the inherent properties of the reactants, the presence of a catalyst, and the surface area of the reactants
Factors that don't affect reaction rate	the reaction's color, the reaction's force, the experiment's location, and the container used
enthalpy	The total amount of energy in a thermodynamic system
reaction mechanism	The overall sequence of steps that composes a chemical reaction
activated complex	A transitional substance that results when a reactant bonds are broken, and persists while product bonds are being formed
calorimetry	The measurement of enthalpy changes caused by chemical reactions, changes of state, or the formation of a solution
reaction spontaneity	A reaction's tendency to occur without an outside force or energy being applied to sustain the reaction
Chemical thermodynamics	the study of the relationship between heat and work within chemical reactions or physical changes of state
standard molar enthalpy of formation	the amount of heat energy transferred when one mole of a compound is formed from its component elements in their standard states
first law of thermodynamics	The law that states a thermodynamic system's total amount of energy remains constant, is also called the law of conservation of energy.
standard state	A substance's state, solid, liquid, or gas, at room temperature (25°C or 298 K) and a pressure of 100 kPa
Gibbs free energy	The type of free energy that is a thermodynamic function and measures a system's capacity to perform work
entropy	a measure of the energy unavailable to perform work, is also the measure of randomness, or disorder, of a thermodynamic system
spontaneous reaction	a chemical reaction in which the reactants are converted into products without the constant addition of energy from outside the thermodynamic system to sustain the reaction
Rules that apply to Hess's law	CHECK Q2
Statements that don't apply to hess's law	"No thermochemical equation can ever be reversed to calculate enthalpy, even if the value is changed" and "If a reaction contains intermediate steps, the overall enthalpy is equal to the last step where the enthalpy changed."
Activation energy	The minimum amount of energy needed to begin a chemical reaction
reaction rate	The change in concentration of reactants or products in a chemical reaction per unit of time.
reaction kinetics	The field of chemistry that deals with reaction mechanisms and reaction rates.
Standard molar enthalpy of reaction	the amount of heat transferred when the number of moles of reactants specified in a chemical equation is completely converted into products.
Standard molar enthalpy of combustion	The amount of heat transferred during the complete combustion of one mole of a reactants in its standard state.
Hess's Law	The overall enthalpy change in a reaction is the same whether it occurs in one step or a series of steps.
Law of conservation of energy	The total amount of energy in a thermodynamic system remains constant.

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