Vocab

Question 1

Collision Theory

Answer 1

In order for product molecules to form during a chemical reaction, reactant molecules must collide with each other and at the moment of collision they must be properly aligned with each other.

Question 2

Instantaneous Reaction Rate

Answer 2

The rate of a reaction at a single moment in time

Question 3

Initial Reaction Rate

Answer 3

The rate of a reaction at the very beginning of the reaction.

Question 4

Average Reaction Rate

Answer 4

The average rate of a reaction during a period of time during the reaction

Question 5

Equilibrium

Answer 5

This develops when two opposing processes occur at the same time

Question 6

Equilibrium Reaction

Answer 6

A chemical reaction during which reactants collide to form products while products are colliding to reform reactants at the same time

Question 7

Forward reactants

Answer 7

This occurs when reactants collide to form products molecules

Question 8

Reverse reaction

Answer 8

This occurs when products molecules collide to form reactant molecules

Question 9

Reaction to completion

Answer 9

A chemical reaction during where reactants collide to form products but products don’t form reactants

Question 10

Initial rate law

Answer 10

A math equation that can be used to calculate the initial rate of a reaction based on the initial concentration of the reactants. Must be done through experimentation in lab

Question 11

Rate law constant

Answer 11

the number in an initial rate law that can often be used to compare the rates of two different chemical reactions

Question 12

Order of reactants

Answer 12

The exponent beside a reactant in the initial rate law

Question 13

Overall reaction order

Answer 13

The sum of the exponents beside all the reactants in an initial rate law

Question 14

Reaction mechanism

Answer 14

A series of simple chemical reactions by which a complex chemical reaction occurs. Sometimes called a pathway

Question 15

Elementary steps

Answer 15

Each simple chemical reaction during a reaction mechanism

Question 16

Unimolecular collision

Answer 16

A collision between two identical reactants molecules during a reaction mechanism

Question 17

Bimolecular collision

Answer 17

A collision between 2 different reactants molecules during a reaction mechanism

Question 18

Trimolecular collision

Answer 18

A collision between 3 different reactant molecules during a reaction mechanism

Question 19

Intermediate

Answer 19

A molecule produced during one step of a reaction mechanism and then consumed in a future step of a reaction mechanism

Question 20

Rate determining step

Answer 20

The slowest step in a reaction mechanism this step alone determines the rate of the entire reaction mechanism

Question 21

Potential energy

Answer 21

The energy molecules possess because if their positions or location. The potential energy of molecules involves the repulsion of their electron clouds and the energy required to break the bonds of the reactants molecules.

Question 22

Potential energy diagram

Answer 22

A theoretical graph that depicts the amount of potential energy between two reactants as they move randomly in a container

Question 23

Activation energy

Answer 23

The amount of kinetic energy reactant molecules must possess in order to overcome the repulsion of their electron clouds and collide with each other

Question 24

Activated complex

Answer 24

A structure cream at the moment of an effect collision between reactant molecules at this moment the bonds of reactants are breaking and the bonds of products are forming

Question 25

Kinetic energy distribution diagram

Answer 25

A diagram that indicates the relative numbers of reactants molecules in a container that possess certain amounts of kinetic energy.

Question 26

Enzymes

Answer 26

A molecule added to a chemical reaction that changes the rate of the reaction

Question 27

Catalyst

Answer 27

An enzyme that speeds up a reaction

Question 28

Inhibitor

Answer 28

An enzyme that slows down the rate of a reaction

Question 29

Substrate

Answer 29

The reactant molecule to which the enzyme attaches by the lock and key mechanism

Question 30

Lock and key mechanism

Answer 30

Two molecules will attach to each other like pieces of a puzzle if they have exactly opposite shapes and charge distribution

Question 31

Chemical Kinetics

Answer 31

The study of the speed at which reactants change to products during a chemical reaction.