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## Section A 1. What term refers to the amount of substance present in a system? * Content * Reaction Rate * Activation Energy * **Concentration** 2. Which term describes the speed at which a chemical reaction takes place? * Content * **Reaction Rate** * Collision Theo...

## Section A 1. What term refers to the amount of substance present in a system? * Content * Reaction Rate * Activation Energy * **Concentration** 2. Which term describes the speed at which a chemical reaction takes place? * Content * **Reaction Rate** * Collision Theory * Activated Complex 3. The minimum amount of energy required for a chemical reaction to occur is known as: * Concentration * Surface Area * **Activation Energy** * Temperature 4. Which factor affects the rate of a reaction by influencing the number of collisions between reacting particles? * Concentration * **Surface Area** * Temperature * Catalyst 5. A substance that increases the rate of a chemical reaction without being consumed in the process is known as a: * Inhibitor * Concentration * **Activated Complex** * Catalyst 6. What is a substance that decreases the rate of a chemical reaction called? * Catalyst * **Inhibitor** * Activated Complex * Concentration 7. A catalyst that exists in the same phase as the reactants is termed: * **Heterogeneous Catalyst** * $NaCl + HCl \longrightarrow NaCl + H_2O$