PSc Classify Chemical Reactions 1

A synthesis reaction has two or more reactants (formulas on the LEFT of the arrow) but only one product (on the RIGHT). Which is a synthesis reaction?

• 2 Mg + O₂ --> 2 MgO

• NH₄NO₃ --> N₂O + 2 H₂O

• 2 Fe + 3 CuCl₂ --> 2 FeCl₃ + 3 Cu

• CaBr₂ + K₂S --> 2 KBr + CaS

Which is a synthesis reaction?

• 2 Al + Fe₂O₃ --> Al₂O₃ + 2 Fe

• 2 Bi(NO₃)₃ + 3 K₂S --> Bi₂S₃ + 6 KNO₃

• 3 Ca + N₂ --> Ca₃N₂

• 2 HCl --> H₂ + Cl₂

Which is a synthesis reaction?

• 2 BiCl₃ + 3 H₂S --> Bi₂S₃ + 6 HCl

• Mg + 2 HCl --> MgCl₂ + H₂

• 2 H₂O --> 2 H₂ + O₂

• P₄ + O₂ --> P₄O₁₀

A decomposition reaction has one reactant breaking down into more than one product. Which is a decomposition reaction?

• 2 Mg + O₂ --> 2 MgO

• NH₄NO₃ --> N₂O + 2 H₂O

• 2 Fe + 3 CuCl₂ --> 2 FeCl₃ + 3 Cu

• CaBr₂ + K₂S --> 2 KBr + CaS

Which is a decomposition reaction?

• 2 Al + Fe₂O₃ --> Al₂O₃ + 2 Fe

• 2 Bi(NO₃)₃ + 3 K₂S --> Bi₂S₃ + 6 KNO₃

• 3 Ca + N₂ --> Ca₃N₂

• 2 HCl --> H₂ + Cl₂

Which is a decomposition reaction?

• 2 BiCl₃ + 3 H₂S --> Bi₂S₃ + 6 HCl

• Mg + 2 HCl --> MgCl₂ + H₂

• 2 H₂O --> 2 H₂ + O₂

• P₄ + O₂ --> P₄O₁₀

A single replacement reaction has one element and one compound on BOTH the left and right sides of the arrow. Which is single replacement?

• 2 Mg + O₂ --> 2 MgO

• NH₄NO₃ --> N₂O + 2 H₂O

• 2 Fe + 3 CuCl₂ --> 2 FeCl₃ + 3 Cu

• CaBr₂ + K₂S --> 2 KBr + CaS

Which is a Single Replacement reaction?

• 2 Al + Fe₂O₃ --> Al₂O₃ + 2 Fe

• 2 Bi(NO₃)₃ + 3 K₂S --> Bi₂S₃ + 6 KNO₃

• 3 Ca + N₂ --> Ca₃N₂

• 2 HCl --> H₂ + Cl₂

Which is a Single Replacement reaction?

• 2 BiCl₃ + 3 H₂S --> Bi₂S₃ + 6 HCl

• Mg + 2 HCl --> MgCl₂ + H₂

• 2 H₂O --> 2 H₂ + O₂

• P₄ + O₂ --> P₄O₁₀

A doublereplacement reaction has 2 compounds on BOTH the left and right sides of the arrow. Which is double replacement?

• 2 Mg + O₂ --> 2 MgO

• NH₄NO₃ --> N₂O + 2 H₂O

• 2 Fe + 3 CuCl₂ --> 2 FeCl₃ + 3 Cu

• CaBr₂ + K₂S --> 2 KBr + CaS