A fire is an example of ________________ reaction, because heat is _____________ the system.
endothermic; entering
b
exothermic; entering
c
exothermic; leaving
d
endothermic; leaving
c
exothermic; leaving
The correct answer is:
c) exothermic; leaving
A fire is an example of an exothermic reaction because heat is released from the system.
The correct answer is C: exothermic; leaving.
To understand why, let's break down the question and discuss the concepts involved.
A fire is an example of a chemical reaction known as combustion. Combustion reactions involve the rapid combination of oxygen with a fuel source, resulting in the release of heat and light. In this case, the fuel source is typically a flammable material such as wood, paper, or gas.
Now let's consider the terms "endothermic" and "exothermic."
An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, causing the temperature of the surroundings to decrease. In other words, heat energy is entering the system from the surroundings.
On the other hand, an exothermic reaction is a chemical reaction that releases heat into its surroundings, causing the temperature of the surroundings to increase. In other words, heat energy is leaving the system and being transferred to the surroundings.
In the case of a fire, it is an exothermic reaction because heat is being released into the surroundings. When you observe a fire, you can feel the heat radiating from it, which indicates that heat is leaving the fire and transferring to the environment.
So, the correct answer is C: exothermic; leaving.