What explains how reactions take place?
A) Law of conservation mass
B) Law of conservation of energy
C) Collision theory
Products can only form when reactant collisions overcome the:
A) collision threshold
B) Gibbs free energy
C) activation energy
D) bonding barrier
For a chemical reaction the reaction rate is:
) change in concentration as reaction takes place over time
B) speed at which products are produced
C) speed at which reactants are consumed
D) all of the above
Which factor(s) affects the reaction rate?
A) reactant surface area
B) catalyst
C) container size
D) a and b
If the concentration of the reactant increases, generally:
A) the amount of product will decrease
B) the temperature of the reaction will increase
C) the rate of reaction will increase
D) there is no effect on reaction rate
Catalysts can be involved in what type(s) of reactions?
A) enzyme
B) inorganic
C) biological
D) all of the above
How quickly are catalysts consumed in a reaction?
A) same rate as the products
B) same rate as the reactants
C) depends on the reaction type
D) none of the above
What is the branch of chemical science that deals with reaction rates
a) stoichiometry
B) thermodynamics
C) kinetics
D) none of the above
Increasing the temperature of a reaction also increases the:
A) product concentration
B) activation energy
C) catalyst efficiency
D) reaction rate
Decreasing the particle size of reactants:
A) has no affect on reaction rate
B) increases surface area for collisions to occur
C) increases reaction rate
D) b and c
Reaction rates are generally fastest for:
A) biological reactions
B) inorganic reactions
C) ionic reactions
D) all are about the same
The nature of the reactants affecting reaction rate includes:
A) color
B) physical state
C) temperature
D) none of the above
What explains how reactions take place?
B) Law of conservation of energy
You get the same amount of energy on both sides of the reaction.
Products can only form when reactant collisions overcome the:
C) activation energy
It is defined as the amount of energy required to make the reaction start.
For a chemical reaction the reaction rate is:
D) All of the above
Which factor(s) affects the reaction rate?
D) a and b
Clearly more catalyst make reactions go faster. Increasing the surface area of the reactants results in a higher number of reaction sites.
If the concentration of the reactant increases, generally:
C) the rate of reaction will increase
Catalysts can be involved in what type(s) of reactions?
B) inorganic
Nasty question. Enzymes are biological catalysts.
How quickly are catalysts consumed in a reaction?
D) none of the above
Catalysts are not consumed by the reaction.
What is the branch of chemical science that deals with reaction rates
a) stoichiometry
Increasing the temperature of a reaction also increases the:
D) reaction rate
Decreasing the particle size of reactants:
D) b and c
More surface area = more reactions
Reaction rates are generally fastest for:
D) all are about the same
Stupid question. All reactions are different.
The nature of the reactants affecting reaction rate includes:
C) temperature
Higher temperature makes for faster rates.
What explains how reactions take place?
B) Law of conservation of energy
You get the same amount of energy on both sides of the reaction.
Products can only form when reactant collisions overcome the:
C) activation energy
It is defined as the amount of energy required to make the reaction start.
For a chemical reaction the reaction rate is:
D) All of the above
Which factor(s) affects the reaction rate?
D) a and b
Clearly more catalyst make reactions go faster. Increasing the surface area of the reactants results in a higher number of reaction sites.
If the concentration of the reactant increases, generally:
C) the rate of reaction will increase
Catalysts can be involved in what type(s) of reactions?
B) inorganic
Nasty question. Enzymes are biological catalysts.
How quickly are catalysts consumed in a reaction?
D) none of the above
Catalysts are not consumed by the reaction.
What is the branch of chemical science that deals with reaction rates
a) stoichiometry
Increasing the temperature of a reaction also increases the:
D) reaction rate
Decreasing the particle size of reactants:
D) b and c
More surface area = more reactions
Reaction rates are generally fastest for:
D) all are about the same
Stupid question. All reactions are different.
The nature of the reactants affecting reaction rate includes:
C) temperature
Higher temperature makes for faster rates.