Collision Theory
Energy Diagrams
Miscellaneous
Bond Energy
Mixed
100
_____________ (increasing / decreasing) will increase the number of collisions between molecules and ____________ (increase / decrease) the rate of reaction.
increasing, increase
100
Identify the activated complex.
C
100
_____________ are catalysts found in living organisms that increase the rate of reactions in cells.
enzymes
100
Combustion reactions are known to release energy in the form of heat and light. What will the enthalpy value be?
negative
100
What is the potential energy of the products?
50kJ
200
In reactions, the molecules must __________ (collide/move past) to break the chemical bonds.
Collide
200
Is the reaction shown exothermic or endothermic?
endothermic
200
The forward reaction moves to the ___________ (left / right), while the reverse reaction moves to the (left / right).
right, left
200
Which bond is the strongest in the chart?
1072 Carbon Monoxide
200
Object A has a temperature of 50.0 0C, and object B has a temperature of 40.0 0C. When these objects are brought into contact, what will eventually occur?
Both objects will eventually be the same temperature
300
Chemical ___________ involves the study of reaction rates and pathways.
A. kinetics
B. equilibrium
C. collision theory
D. mechanisms
A. kinetics
300
What is B in the diagram below?
activation energy
300
A ________ _________ occurs when a reaction mechanism creates highly reactive elements that propagate the reaction, like knocking down a series of dominos.
chain reaction
300
Which of these bonds would release the least 
energy when formed?
146 O-O
300
Which vessel will have the slowest reaction?
vessel 3
400
Name four ways to increase the rate of a reaction.
increase temperature, increase concentration, increase surface area, add a catalyst
400
Which shows the net change in energy for the reaction, Δ H or enthalpy?
D
400
Which of the following reactions would be more likely to occur in a single step?
A. H2 (g) + I2 (g) ⇌ 2 HI (g)
B. 2 C2H11 (l) + 15O2 (g) → 12 CO2 (g) + 6 H2O
A
400
Decomposition reactions often require heating for the reaction to occur. What can be said about the enthalpy of such reactions?
It is + and endothermic
400
Is the amount of energy the same, more, or less in breaking and forming chemical bonds?
same
500
How does decreasing the volume of a gaseous system affect the rate of reaction?
increases rate of reaction
500
What effect is demonstrated in the diagram below?
catalyst lowers activation energy
500
Which of the following diagrams will the reaction occur the quickest?
vessel 3
500
Calculate the total bond energy for the reaction:
H2 + Cl2 -> 2HCl
-184 kJ
500
Which vessel has the greatest concentration?
vessel 1