There are 4 types of inorganic reactions you need to know;
synthesis, decomposition, single and double replacement.
Synthesis- A + B --> AB (1 Product)
2Al + 3I2--> 2AlI3
Decomposition AB--> A + B (1 Reactant)
2H2O2 --> 2H2O + O2
Single Replacement A + BC --> AC + B (an element replaces another and it is left all alone)
2Mg + CO2--> 2MgO + C
Double Replacement (Metathesis) AB + CD --> AD + CB (switch partners)
AgNO3 + NaOH--> AgOH(s) + NaNO3
Hydrocarbon Combustion CxHy + O2 --> X CO2 +1/2Y H2O
Peroxyacetone + O2 --> CO2 + H2O
Past Regents Balancing Questions- Follow link for answers
June 2009-34 Given the balanced equation representing a reaction: 4Al(s)+ 3O2(g)-->2Al2O3(s) Which type of chemical reaction is represented by this equation? (1) double replacement (2) single replacement (3) substitution (4) synthesis
Jan 2004-38 Given the reaction: Mg(s)+ 2 AgNO3(aq)--> Mg(NO3)2(aq)+ 2 Ag(s) Which type of reaction is represented? (1) single replacement (3) synthesis (2) double replacement (4) decomposition
August 2005-38 Given the balanced equation: AgNO3(aq)+ NaCl(aq) ==> NaNO3(aq)+ AgCl(s) This reaction is classified as (1) synthesis (2) decomposition (3) single replacement (4) double replacement
Jan 2010-10 In which type of reaction do two or more substances combine to produce a single substance? (1) synthesis (2) decomposition (3) single replacement (4) double replacement
Aug 2009-35 Which equation represents a decomposition reaction? (1) CaCO3(s)==>CaO(s)+ CO2(g) (2) Cu(s)+ 2AgNO3(aq) ==>2Ag(s)+ Cu(NO3)2(aq) (3) 2H2(g)+ O2(g) ==>2H2O(l) (4) KOH(aq)+ HCl(aq) ==>KCl(aq)+ H2O(l)
