Chapter 18- Speed of Reaction

Biological catalysts which are sensitive to pH and temperature.

________ is very slow while precipitation reactions are very fast.

A substance that increases the speed of the reaction while remaining chemically unchanged itself.

________ of the reaction (directly proportional to the speed of reaction): When the ________ of the reactants is more, the particles gain kinetic energy and collide more frequently.

amount of reactant used up, amount of product obtained, volume of gas produced

When the concentration of the reactants is more, there are more particles per unit volume which increases the frequency of collisions

When the pressure of the reactants is more, there are more particles per unit volume which increases the frequency of collisions

When the particle size is smaller, more surfaces are exposed, increasing the surface area to volume ratio which in turn increases the frequency of collisions

When the temperature of the reactants is more, the particles gain kinetic energy and collide more frequently

The amount of product formed per unit time in a chemical reaction.

The chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat.

the energy that an atomic system must acquire before a process can occur.

The collision when two reactants successfully collide with enough energy and the right orientation to make a product.