Transfer Between Systems Quick Check
1.Which phrase defines activation energy?(1 point)
energy output when product bonds are formed
energy input needed to break bonds of reactants
energy stored in chemical bonds
energy required to break a chemical bond
2.Which phrase defines chemical potential energy?(1 point)
energy stored in chemical bonds
energy input needed to break reactant bonds
energy output when product bonds form
energy required to break a chemical bond
3.Which statement correctly explains a difference between white and red phosphorus? (1 point)
White phosphorus has less chemical potential energy than red phosphorus.
.
White phosphorus has more chemical potential energy than red phosphorus.
White phosphorus has a higher activation energy than red phosphorus.
White phosphorus has a lower activation energy than red phosphorus.
4.How can the chemical potential energy in an endothermic reaction best be described?(1 point)
Reactants have higher chemical potential energy than products.
Products and reactants have the same chemical potential energy.
Product and reactant chemical potential energy varies in different environments.
Products have higher chemical potential energy than reactants.
5.How are activation energy and reaction rate most likely related?(1 point)
Higher activation energy results in a faster reaction rate.
Higher activation energy results in a slower reaction rate.
A faster reaction rate results in higher activation energy.
A faster reaction rate results in lower activation energy.
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1.energy input needed to break bonds of reactants
2.energy stored in chemical bonds
3.White phosphorus has a lower activation energy than red phosphorus
4.Products have higher chemical potential energy than reactants.
5.Higher activation energy results in a slower reaction rate.
anime weeb is 100% right I just took the quick check!
1. To determine the definition of activation energy, let's analyze the options given in the first question:
- Energy output when product bonds are formed: This option doesn't accurately describe activation energy, as it refers to energy released, not energy input.
- Energy input needed to break bonds of reactants: This option accurately defines activation energy. It refers to the energy required to break the chemical bonds of reactants.
- Energy stored in chemical bonds: This option refers to chemical potential energy, not activation energy.
- Energy required to break a chemical bond: This option accurately defines activation energy.
Based on the explanations, the correct answer to the first question is "energy input needed to break the bonds of reactants."
2. Let's analyze the options given in the second question to determine the definition of chemical potential energy:
- Energy stored in chemical bonds: This option accurately defines chemical potential energy. It refers to the energy stored within the chemical bonds of a substance.
- Energy input needed to break reactant bonds: This option refers to activation energy, not chemical potential energy.
- Energy output when product bonds form: This option refers to the energy released when product bonds are formed, not chemical potential energy.
- Energy required to break a chemical bond: This option refers to activation energy, not chemical potential energy.
Based on the explanations, the correct answer to the second question is "energy stored in chemical bonds."
3. Let's analyze the options given in the third question to correctly explain the difference between white and red phosphorus:
- White phosphorus has less chemical potential energy than red phosphorus: This option is incorrect as it states the opposite. White phosphorus has more chemical potential energy than red phosphorus.
- White phosphorus has more chemical potential energy than red phosphorus: This option accurately explains the difference between white and red phosphorus.
- White phosphorus has a higher activation energy than red phosphorus: This option refers to activation energy, not chemical potential energy.
- White phosphorus has a lower activation energy than red phosphorus: This option refers to activation energy, not chemical potential energy.
Based on the explanations, the correct answer to the third question is "White phosphorus has more chemical potential energy than red phosphorus."
4. Let's analyze the options given in the fourth question to describe the chemical potential energy in an endothermic reaction:
- Reactants have higher chemical potential energy than products: This option accurately describes an endothermic reaction. In an endothermic reaction, the products have higher chemical potential energy than the reactants.
- Products and reactants have the same chemical potential energy: This option does not accurately describe an endothermic reaction, as the products have higher chemical potential energy.
- Product and reactant chemical potential energy varies in different environments: This option does not accurately describe an endothermic reaction, as it refers to variations in different environments, not the general concept of an endothermic reaction.
- Products have higher chemical potential energy than reactants: This option accurately describes an endothermic reaction.
Based on the explanations, the correct answer to the fourth question is "Products have higher chemical potential energy than reactants."
5. Let's analyze the options given in the fifth question to understand the relationship between activation energy and reaction rate:
- Higher activation energy results in a faster reaction rate: This option is incorrect. Higher activation energy typically results in a slower reaction rate.
- Higher activation energy results in a slower reaction rate: This option accurately describes the relationship between activation energy and reaction rate. Higher activation energy typically leads to slower reaction rates.
- A faster reaction rate results in higher activation energy: This option is incorrect. A faster reaction rate does not result in higher activation energy.
- A faster reaction rate results in lower activation energy: This option accurately describes the relationship between reaction rate and activation energy. A faster reaction rate is often associated with lower activation energy.
Based on the explanations, the correct answer to the fifth question is "A faster reaction rate results in lower activation energy."
If you find the material in this class challenging, it can be helpful to seek additional resources such as textbooks, online tutorials, or asking your instructor for assistance. Practice problems and reviewing the concepts regularly can also improve your understanding. Don't hesitate to ask for help from classmates or tutoring services if needed. Persistence and dedication can lead to improvement in understanding and grades. Good luck!
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