4.Which of the following is the best description of combustion. Combustion is when you ___________________.

A. Use carbon dioxide and light energy to make oxygen and heat energy.
B. Use oxygen to convert a fuel to heat and light energy.
C. Use carbon dioxide and a fuel to produce water vapor and energy.
D. Use oxygen and a sugar to make energy and carbon dioxide.

Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is called the fuel, and the source of oxygen is called the oxidizer.

The fuel can be a solid, liquid, or gas, although for airplane propulsion the fuel is usually a liquid.

For example, charcoal is combining with oxygen.

Combustion is commonly called burning, and the substance that burns is usually referred to as fuel.

To summarize,

For combustion to occur three things must be present:

a fuel to be burned.
a source of oxygen
a source of heat.

As a result of combustion, exhausts are created and heat is released. You can control or stop the combustion process by controlling the amount of the fuel available, the amount of oxygen available, or the source of heat.

Therefore,

Combustion is when you use oxygen to convert a fuel to heat and light energy.

Learn more information about Combustion: https://brainly.com/question/15117038

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