Define reaction rate.
The speed at which reactants are converted into products in a chemical reaction.
True or false: Temperature affects the rate of chemical reactions.
TRUE
Higher temperatures generally increase reaction rates due to increased molecular movement.
Fill in the blank: Catalysts speed up reactions without being _______.
Used Up
What is the effect of concentration on reaction rate?
Higher concentration typically increases the reaction rate by providing more reactant particles to collide successfully.
Define activation energy.
The minimum energy required for a chemical reaction to occur.
True or false: Surface area does not influence reaction rates.
FALSE
Increased surface area allows more collisions between reactants, speeding up reactions.
Fill in the blank: Enzymes are biological _______ that speed up reactions.
catalysts
What is the collision theory?
A theory stating that for a reaction to occur, reactant particles must collide with sufficient energy. T
True or false: Pressure affects the rate of reactions involving gases.
TRUE
Increasing pressure increases gas concentration, leading to more collisions.
What is a bimolecular reaction?
A reaction that involves two reactant particles colliding.
Define transition state.
A high-energy state during a chemical reaction where old bonds are breaking and new bonds are forming.
True or false: Photochemical reactions require light to proceed.
TRUE
These reactions involve the absorption of light energy.
What is the role of temperature in reaction kinetics?
Temperature affects the kinetic energy of molecules, influencing collision frequency and energy. Basically speeding up the rate of reaction
