Nate Core Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

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What is the process of combustion primarily associated with?

Chemical reaction

The process of combustion is primarily associated with a chemical reaction. During combustion, a fuel reacts with an oxidizer (usually oxygen in the air) to produce heat and light. This process results in the formation of new substances, typically carbon dioxide and water, indicating a fundamental change in the chemical composition of the reactants.

The release of energy in the form of heat and light distinguishes combustion from physical changes, where substances retain their original chemical properties. Mechanical engineering and thermal energy transfer may relate to combustion in terms of applications and results, but they do not define the combustion process itself, which is inherently a chemical transformation. Understanding this distinction is crucial for grasping the underlying principles of combustion and its applications in various fields, such as engineering and environmental science.

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Physical change

Mechanical engineering

Thermal energy transfer

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