Chemical Reactions > Define what is meant by the term chemical reaction. In the following chemical equation, identify the reactants and the products. 3Ba(CHO)2(aq) + 2Na3PO4(aq) Ba3(PO4)2(s) + 6NaCHO2(aq) In the above chemical equation, what do the symbols (aq) and (s) stand for? What would the symbols (1) and (g) stand for in a chemical equation? What does the number placed in front of a compound indicate? What does the number placed after an element indicate? What does the arrow symbolize? > Chemical reactions can often be classified as one of five types. Write the general form equation for each type of reaction. Synthesis (composition): Decomposition Single-Replacement Double-Replacement . Combustion Using the five types of reactions listed above, classify and balance the following reactions: Na (s) + _Br, ___NaBrs, CH 4(g) + O. 2(g) KCrO 4(aq) _H,O _Hg) (1) H(8) + Als+_FeO3(s) _C8H18) + + Ba(NO3)2(aq) CO2(g) 2(g) + O HO 2(g) O. 2(g + _AlO3(s) CO. 2(g) + HO(g) + B