Question

9. Use the following vocabulary terms to correctly fill in the blanks. (Extra Practice) Vocabulary catalyst energy catalytic converter collisions rate of reaction concentration surface area dilute temperature 1. A freshly exposed surface of metallic sodium tarnishes almost instantly if exposed to air and moisture, while iron will slowly turn to rust under the same conditions. In these two situations, the refers to how quickly or slowly reactants turn into products. 2. Adding will increase the rate of reaction because this causes the particles of the reactants to move more quickly, resulting in more collisions and more 3. Removing heat will lower the slow down, resulting in less frequent collisions. _, causing the particles of the reactants to refers to how much solute is dissolved in a solution. If there is a greater concentration of reactant particles present, there is a greater chance that among them will occur. More collisions mean a higher rate of reaction. 5. A concentrated acid solution will react more quickly than a acid solution because there are more molecules present, increasing the chance of collisions. 6. Grains of sugar have a greater mass, and therefore will dissolve quicker in water. _than a solid cube of sugar of the same 7. A for example an enzyme, is used to speed up a chemical reaction but is not used up in the reaction itself. 8. A in car has metallic catalysts where several reactions occur. Carbon monoxide, which was produced in the combustion of gasoline, is changed into carbon dioxide and water in the presence of these metallic catalysts.

Answer 1

1. Rate of Reaction

2. Heat , Energy

3. Temperature

4. Concentration , Collisions

5. Dilute

6. Surface area

7. Catalyst

8. Catalytic Converter