Why does a greater surface area increase the rate of reactions? a) It increases the quantity of reactants available to react
b) It lowers the activation energy
c) It increases the energy of reactant particles
d) It increases frequency of collissions

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

the answer would be c

your answer would be “dry”

answerlinnaeus;