Answer:
Option C: a negative ΔH, gives off heat to the surroundings, and feels warm to the touch
Explanation:
Step 1:
An exothermic reaction = a reaction that gives off heat to the surroundings.
There is a temperature raise.
<em>A) a negative ΔH, absorbs heat from the surroundings, and feels cold to the touch.</em>
This is false. since there is a temperature raise, it doesn't feel cold to the touch, and gives off heat to the surroundings.
<em>B) a positive ΔH, gives off heat to the surroundings, and feels warm to the touch.</em>
This is false. An exothermic reaction has a negative ΔH.
<em>C) a negative ΔH, gives off heat to the surroundings, and feels warm to the touch. </em>This is correct
<em>D) a positive ΔH, absorbs heat from the surroundings, and feels cold to the touch</em>.
This is false. An exothermic reaction doesn't absorb heat from the surroundings, it doesn't feel cold to the touch.
<em>E) a positive ΔH, absorbs heat from the surroundings, and feels warm to the touch.</em>
This is false. An exothermic reaction doesn't have a positive ΔH.