Colegio San PatricioName _____________________________________ Date ___________________

TYPE A

1.- Classify the following reactions as exothermic or endothermica) N2 + O2 + E NOb) H2 + N2 NH3 + E

2.- Rewrite the following as chemical equation:

a) Aluminum oxide reacts with carbon to form aluminum metal and carbon dioxide gas

b) Aqueous solutions of K2SO4 and barium chloride react to form a precipitate of BaSO4 and a solution of potassium chloride

c) Calcium carbonate (CaCO3) decomposes when burned to produce carbon dioxide gas and calcium oxide solid

d) Hydrogen peroxide (H2O2) decomposes in presence of MnO2 as a catalyst to form liquid water and oxygen gas

3.- Name the following compounds.a) NaHCO3 c) Ca(NO3)2

b) K2SO4 d) Al(C2H3O2)3

Colegio San PatricioName _____________________________________ Date ___________________

TYPE B

1.- Classify the following reactions as exothermic or endothermica) SO2 + O2 SO3 + Eb) CaCO3 + E CaO + CO2

2.- Rewrite the following as chemical equation:

a) Nitrogen monoxide gas and oxygen gas react to form nitrogen dioxide gasb) Carbon monoxide gas and oxygen gas react in the presence of platinum as a catalyst to form carbon dioxide gas.c) Solutions of AgNO3 and potassium chloride react to form a solution of KNO3 and a precipitate of AgCld) C2H2 burns with oxygen gas to form carbon dioxide gas and water vapor

3.- Name the following compounds.a) MgCO3 c) Li2Cr2O7

b) Na2SO3 d) KCN

Colegio San PatricioName _____________________________________ Date ___________________

TYPE C

1.- Classify the following reactions as exothermic or endothermica) KClO3 + E KCl + O2b) H2 + N2 NH3 + E

2.- Rewrite the following as chemical equation:

e) Aqueous solutions of KOH and FeCl3 react to form a precipitate of Fe(OH)3 and a solution of potassium chloride

f) Magnesium carbonate (MgCO3) decomposes when burned to produce carbon dioxide gas and magnesium oxide solid

g) Hydrogen peroxide (H2O2) decomposes in presence of MnO2 as a catalyst to form liquid water and oxygen gas

h) Phosphorus reacts with liquid bromine to produce aluminum bromide

3.- Name the following compounds.a) KHCO3 c) MgNO3

b) Li2SO4 d) Ba(C2H3O2)2

Colegio San PatricioName _____________________________________ Date ___________________

TYPE D

1.- Classify the following reactions as exothermic or endothermica) SO2 + O2 SO3 + Eb) CaCO3 + E CaO + CO2

2.- Rewrite the following as chemical equation:

a) Nitrogen dioxide gas and liquid water react to form HNO3 solution and nitrogen monoxide gasb) Carbon monoxide gas and oxygen gas react in the presence of platinum as a catalyst to form carbon dioxide gas.c) Aqueous solutions of KOH and FeCl3 react to form a precipitate of Fe(OH)3 and a solution of potassium chlorided) Calcium carbonate (CaCO3) decomposes when burned to produce carbon dioxide gas and calcium oxide solid

3.- Name the following compounds.a) CaCO3 c) K2Cr2O7

b) Li2SO3 d) Al(OH)3