Chemical Reactions Quiz

What is the key point of combination reactions?

• One reactant and multiple products

• Multiple reactants and one product

• One reactant and one product

• Multiple reactants and multiple products

What is the key point of decomposition reactions?

• Multiple reactants and one product

• One reactant and multiple products

• One reactant and one product

• Multiple reactants and multiple products

What is the key point of displacement reactions?

• Multiple reactants and multiple products

• Multiple reactants and one product

• One reactant and multiple products

• more active element displaces less active element

What is the key point of double displacement reactions?

• One reactant and multiple products

• two compounds exchange their anions

• One reactant and one product

• Multiple reactants and one product

What is the key point of redox reactions?

• One reactant and multiple products

• One reactant and one product

• Multiple reactants and one product

• One substance is oxidized and another one is reduced

What is the correct formula for the compound formed when sodium and chlorine combine?

• NaCl

• Na2Cl

• Na2Cl2

• NaCl2

What is the correct formula for the compound formed when magnesium and oxygen combine?

• MgO2

• Mg2O2

• MgO

• Mg2O

What is the correct formula for the compound formed when carbon monoxide and oxygen combine?

• CO2

• C2O2

• CO

• C2O

What is the correct formula for the compound formed when lead nitrate and potassium iodide react?

• KNO3

• KI

• PbI2

• PbNO3

What is the correct formula for the compound formed when sodium hydroxide and hydrochloric acid react?

• NaOH2

• NaClO

• NaCl

• H2O