Answer:
B. Mixture
because air,sea water and alloy are example of Mixture
I believe the answer would be c?? I’m not too sure though
Answer:
If one of the reactants is a solid, only the particles at the surface can partake in the reaction. Breaking the reactant into smaller pieces increases the surface and more particles are exposed to the reaction mixture. This results in an increased frequency of collisions and therefore a faster rate of reaction