Fire is an example of ________________ reaction, because heat is _____________ the system.
a
exothermic; leaving
b
endothermic; leaving
c
endothermic; entering
d
exothermic; entering
c) endothermic; entering
The correct answer is d. Fire is an example of an exothermic reaction because heat is entering the system.
The correct answer is: d) exothermic; entering.
To understand why, let's break down the question:
"Fire is an example of ________ reaction."
Fire is commonly associated with the process of combustion, which is an example of an exothermic reaction. In an exothermic reaction, heat (energy) is released to the surroundings. This means that the reaction itself is releasing heat.
Now let's look at the second part of the question:
"because heat is ___________ the system."
In the case of an exothermic reaction, heat is leaving the system. The system refers to the reactants and products involved in the reaction. So, in an exothermic reaction like combustion, the heat is being liberated or released from the system into the surroundings.
Therefore, the correct answer is:
d) exothermic; entering