Unit 5 Vocabulary Quiz

Exothermic Reaction

• A chemical reaction that releases energy in the form of heat, light, sound, electricity, or motion

• A chemical reaction that absorbs energy in the form of heat

• A property related to the energy of a system

• States that the enthalpy change of a reaction is equal to the sum of enthalpy changes fir individual steps in the process

Endothermic Reaction

• A chemical reaction that releases energy in the form of heat, light, sound, electricity, or motion

• A reaction that absorbs energy in the form of heat

• Substance that changes the rate of a chemical reaction without being consumed during the reaction

• Measure of the change in concentration of reactants per unit of time as the reaction proceeds

Reaction Rate

• Substance that changes the rate of a chemical reaction without being consumed during the reaction

• Measure of the change in concentration of reactants per unit of time as the reaction proceeds

• Minimum energy required for collision of reactant particles to result in a reaction

• A chemical reaction that releases energy in the form of heat, light, sound, electricity, or motion

Catalyst

• States that the enthalpy change of a reaction is equal to the sum of enthalpy changes for individual steps in the process

• States in order for a chemical reaction to occur, particles must collide

• Minimum energy required for collision of reactant particles to result in a reaction

• Substance that changes the rate of a chemical reaction without being consumed during the reaction

Enthalpy

• States in order for a chemical reaction to occur, particles must collide

• States that the enthalpy change of a reaction is equal to the sum of enthalpy changes for individual steps in the process

• A property related to the energy of a system

• Minimum energy required for collision of reactant particles to result in a reaction

Collision Theory

• Minimum energy required for collision of reactant particles to result in a reaction

• A reaction that absorbs energy in the form of heat

• States in order for a chemical reaction to occur, particles must collide

• States that the enthalpy change of a reaction is equal to the sum of enthalpy changes for individual steps in the process

Hess's Law

• States that the enthalpy change of a reaction is equal to the sum of enthalpy changes for individual steps in the process

• Minimum energy required for collision of reactant particles to result in a reaction

• States that in order for a chemical reaction to occur, particles must collide

• A property related to the energy of a system

Activation Energy

• A property related to the energy of a system

• Minimum energy required for collision of reactant particles to result in a reaction

• A chemical reaction that releases energy in the form of heat, light, sound, electricity, or motion

• Substance that changes the rate of a chemical reaction without being consumed during the reaction