6.2 Reaction Rates

Rate of Reaction speed Rate of reaction: the ______________ that reactants turn into products

In order for reactants to occur, reactant particles must collide with each other with enough energy collision: ___________________ increase collisions = _____________ in reaction rate the hits increase

more and bigger collisions Temperature average Temperature: _______________ energy of particles high temperature high energy __________ particles more and bigger collisions reaction rate faster increase

Concentration

mixture bigger smaller Concentration Solution: a _______________ of two or more substances   Solvent: the __________ part of the solution Solute: the __________ part of the solution bigger smaller

amount higher lower Concentration Concentration: the ____________ of solute dissolved in solution   Concentrated solution: a solution with a _________ concentration (large amount of solute) Dilute solution: a solution with a _________ concentration (small amount of solute) higher lower

water + CuSO4 solvent solute dilute concentrated

Concentration more more success low concentration (dilute) high concentration ___________ particles collisions higher chance of ___________ higher reaction rate more more success low concentration (dilute) high concentration

Surface Area Surface area: the amount of area exposed to the outside low surface area high surface area

Surface Area high surface area more area for collision more collisions higher chance of success higher reaction rate

A + B + catalyst → AB + catalyst Catalyst: a substance that will speed up a reaction ________________________________ in the reaction without being used up A + B + catalyst → AB + catalyst

Example: Our bodies use enzymes to speed up reactions Example: Our bodies use enzymes to speed up reactions. Enzymes are molecules that help reactants combine together.

non-metal oxide (acid rain) toxic Example: Cars use catalytic converters to break down ____________ gases from ____________________. These toxic gases include carbon monoxide (CO), nitrogen oxides (NO, NO2) and hydrocarbons. Nitrogen oxides: ___________________________________________ Hydrocarbons: creates ___________ Catalytic converters use platinum (Pt) and rhodium (Rh) and palladium (Pd) as catalysts. They are coated inside very small hollow tubes (high surface area!) where the toxic gases will travel through. combustion non-metal oxide (acid rain)

CxHy NO NO2 CO

non-metal oxide (acid rain) smog toxic Example: Cars use catalytic converters to break down ____________ gases from ____________________. These toxic gases include carbon monoxide (CO), nitrogen oxides (NO, NO2) and hydrocarbons. Nitrogen oxides: ___________________________________________ Hydrocarbons: creates ___________ Catalytic converters use platinum (Pt) and rhodium (Rh) and palladium (Pd) as catalysts. They are coated inside very small hollow tubes (high surface area!) where the toxic gases will travel through. combustion non-metal oxide (acid rain) smog

non-metal oxide (acid rain) smog toxic Example: Cars use catalytic converters to break down ____________ gases from ____________________. These toxic gases include carbon monoxide (CO), nitrogen oxides (NO, NO2) and hydrocarbons. Nitrogen oxides: ___________________________________________ Hydrocarbons: creates ___________ Catalytic converters use platinum (Pt) and rhodium (Rh) and palladium (Pd) as catalysts. They are coated inside very small hollow tubes (high surface area!) where the toxic gases will travel through. combustion non-metal oxide (acid rain) smog