Chapter U5.1, Problem 4E

Interpretation Introduction

Interpretation:

Three ways, in which fire is central to life in our planet, needs to be described.

Concept Introduction :

The power or capacity to perform work, for example: the capability to move an object by applying the force is known as energy.

Answer to Problem 4E

Three ways in which fire is central to life are:

1. Used as oxidation material in the exothermic chemical process of combustion.
2. Used as Fuel
3. Used for Cooking

Explanation of Solution

In the chemical reaction which is known as combustion the result of this process is Fire. Within the combustion at specific point flame is produced and this point is known as ignition point. Flame comprises initially nitrogen, oxygen, water vapor and carbon dioxide.

Below are the three ways which fire is central to life in our planet:

• Used as oxidation material in the exothermic chemical process of combustion
• Fire is used as a fast oxidation material within the exothermic chemical reaction which releases light, heat and numerous reactants.
• Used as Fuel
• Usable energy is released when fuel is aflame. Wood, coal is a fuel when they are burned; they release the energy which are used in various purposes. Like coal, natural gas, petroleum is used to supply majority of electricity in today’s world.
• Used for Cooking
• Fire is used by humans to properly cook the foods, instantaneously increasing the availability and variety of nutrients as well as decreasing the disease by eliminating organisms from the food.