Chap 16

Question 1

Chemical kinetics

Answer 1

Area of chemistry concerned with speed, or rate, at which chemical reaction occurs

Question 2

Reaction rate

Answer 2

Change of a reactant or product per unit time

Question 3

Reaction rate law

Answer 3

an expression showing the relationship of the reaction rate to the concentrations of each reactant.

Question 4

Initial rate

Answer 4

Rate at beginning of the reaction

Question 5

Specific rate constant

Answer 5

Symbol k, proportionality constant relating the rate of the reaction to the concentrations of reactants.

Question 6

Elementary reaction

Answer 6

One that occurs in a single step

Question 7

Unimolecular reaction

Answer 7

Reaction because it only has one reactant molecule (A to products)

Question 8

Bimolecular reaction

Answer 8

Has 2 reactant molecules (A + B to products)

Question 9

Trimolecular reaction

Answer 9

3 molecules reaction (A+B+C to products )

Question 10

Reaction order

Answer 10

relationship between the concentrations of species and the rate of a reaction.

Question 11

First order reaction

Answer 11

The reaction rate is directly proportional to the concentration of only one reactant

Question 12

Overall reaction order

Answer 12

Is the sum of the orders with respect to each reactant in the rate law

Question 13

Concentration

Answer 13

Defined as a quantitative measure of the amount of solute dissolved in a given amount of solvent

Question 14

Catalyst

Answer 14

Substance that increases the rate of a chemical reaction without being consumed in the reaction

Question 15

Enzymes

Answer 15

Protein molecules that act as catalysts

Question 16

Biochemical reactions

Answer 16

Chemical reaction taking place in living matter

Question 17

Homogeneous catalyst

Answer 17

Is a catalyst that is in the same phase as the reactants

Question 18

Heterogeneous catalyst

Answer 18

Catalyst and the reactants it is working on are not the same phase

Question 19

Inhabitants

Answer 19

Compounds that slow down or inhibit chemical reactions

Question 20

Collision theory, collision model

Answer 20

States that atoms, ions, and molecules must collide with each other to react

Question 21

Activated complex, transition state

Answer 21

Which is an intermediate particle made up of joined reactants

Question 22

Intermediate particle

Answer 22

Particle that appears in the mechanism of the reaction, ie in the elementary steps, but not in the overall balanced equation

Question 23

Complex reactions

Answer 23

One that consists of 2 or more elementary steps

Question 24

Reaction mechanism

Answer 24

Series of elementary steps that lead to products formation

Question 25

Rate determine step rds

Answer 25

Slowest step in the sequence of steps leading to product formation