1) What is the subscript in 4CaCl2? a) 4 b) 2 c) Ca d) Cl 2) What is the coefficient in 4CaCl2? a) 4 b) 2 c) Ca d) Cl 3) What is the coefficient in Al2O3? a) 1 b) 2 c) 3 d) Al 4) What type of reaction is CuCO3 -> CuO + CO2? a) Synthesis b) Decomposition c) Single Replacement d) Double Replacement 5) What type of reaction is CH4 + 2O2 -> CO2 + 2H2O? a) Synthesis b) Decomposition c) Single Replacement d) Double Replacement 6) What type of reaction is 2H2O + O2 -> 2H2O2? a) Synthesis b) Decomposition c) Single Replacement d) Double Replacement 7) What type of reaction is Ca + 2HCl -> CaCl2 +H2? a) Synthesis b) Decomposition c) Single Replacement d) Double Replacement 8) AB -> A + B a) Synthesis b) Decomposition c) Single Displacement d) Double Displacement 9) A + B -> AB a) Synthesis b) Decomposition c) Single Displacement d) Double Displacement 10) A + BC -> AB + C a) Synthesis b) Decomposition c) Single Displacement d) Double Displacement 11) AB + CD -> AD + CB a) Synthesis b) Decomposition c) Single Displacement d) Double Displacement 12) The law of conservation of mass means: a) matter can neither be created or destroyed b) The mass of the reactants will equal the mass of the products c) The same atoms will be in the reactants and in the products in equal number

Types of Reactions & Balancing Equations!

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