Question

Question
1
Question
2
Question
3
A)
Which phrase defines
activation energy
?
(1 point)
energy required to break a chemical bond
energy output when product bonds are formed
energy stored in chemical bonds
energy input needed to break bonds of reactants
A)
Which phrase defines
chemical potential energy
?
(1 point)
energy input needed to break reactant bonds
energy required to break a chemical bond
energy output when product bonds form
energy stored in chemical bonds
A)
Which statement correctly explains a difference between white and red phosphorus?
(1 point)
White phosphorus has a higher activation energy than red phosphorus.
White phosphorus has a lower activation energy than red phosphorus.
White phosphorus has less chemical potential energy than red phosphorus.
White phosphorus has more chemical potential energy than red phosphorus.
Question
4
Question
5
A)
How can the chemical potential energy in an endothermic reaction best be described?
(1 point)
Products have higher chemical potential energy than reactants.
Products and reactants have the same chemical potential energy.
Reactants have higher chemical potential energy than products.
Product and reactant chemical potential energy varies in different environments.
A)
How are activation energy and reaction rate most likely related?
(1 point)
A faster reaction rate results in higher activation energy.
A faster reaction rate results in lower activation energy.
Higher activation energy results in a faster reaction rate.
Higher activation energy results in a slower reaction rate.

Answer 1

Here are the correct choices:

1. Activation energy — energy input needed to break bonds of reactants.
2. Chemical potential energy — energy stored in chemical bonds.
3. White vs. red phosphorus — White phosphorus has more chemical potential energy than red phosphorus.
4. Endothermic reaction — Products have higher chemical potential energy than reactants.
5. Activation energy vs. rate — Higher activation energy results in a slower reaction rate.