B. ne chemical reaction involved in burning wood
c. less energy is released than is used by the reaction
3. why is a spark of energy required to begin the chemical reaction of
burning a fossil fuel? what is another name for this spark of energy?
4. the reaction below is an exothermic reaction
k2o (s) co2 (g) k2co3 (s)
a. rewrite this reaction and add "t energy" in the correct location.
b. describe how the energy level of the reactants compares to the energy
level of the products.
5. the reaction below is an endothermic reaction.
2hgo (s) 2hg +o2 (g)
a. rewrite this reaction and add energy" in the correct location
b. describe how the energy level of the reactants comporon to th