Question

question 5 (1 point)
a chemical change that involves a release of energy, usually in the form of heat, to
the surroundings is a(n)
○ combustion
○ standard heat of formation
○ exothermic change
○ heat of combustion

question 6 (1 point)
a resource that can only be used once within the scope of human time scales is
○ petroleum
○ non - renewable
○ renewable
○ fossil fuels

question 7 (1 point)
the energy change for a chemical reaction that involves the formation of a
compound from its elements and that is determined experimentally under standard
conditions is known as

Explanation:

1. For Question 5: An exothermic change is defined as a chemical or physical change that releases energy, typically heat, to the surroundings. Combustion is a specific exothermic reaction, while standard heat of formation and heat of combustion are specific energy measurement terms, not the general category of energy-releasing change.
2. For Question 6: Non-renewable is the general term for resources that cannot be replenished within human time scales and are effectively usable only once. Petroleum and fossil fuels are examples of non-renewable resources, not the category itself, while renewable resources can be replenished.
3. Note: Question 7 is incomplete, so no answer can be provided for it. Please share the full question and options to get an answer.

Answer:

1. Question 5: C. exothermic change
2. Question 6: B. non-renewable