PHYSICAL SCIENCE 4TH QUARTER EXAM

Which type of reaction involves two or more reactants forming one product?

• Combination

• Single Displacement

• Decomposition

• Double Displacement

In the reaction 2H₂ + O₂ → 2H₂O, what are the reactants?

• O₂ and H₂O

• H₂ and H₂O

• H₂ and O₂

• H₂O and O₂

What type of reaction is represented by the equation XY → X + Y?

• Combustion

• Combination

• Decomposition

• Single Displacement

Which of the following is an example of a single displacement reaction?

• BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl

• Zn + CuSO₄ → ZnSO₄ + Cu

• CH₄ + O₂ → CO₂ + H₂O

• 2Na + Cl₂ → 2NaCl

What is the main product of a combustion reaction?

• Nitrogen

• Hydrogen

• Carbon Dioxide and Water

• Oxygen

Which type of intermolecular force is the weakest?

• Dipole-Dipole

• Ion-Dipole

• Hydrogen Bonding

• London Dispersion

What effect do stronger intermolecular forces have on boiling point?

• Only affects viscosity

• Decrease it

• No effect

• Increase it

Which intermolecular force occurs between two polar molecules?

• London Dispersion

• Dipole-Dipole

• Ion-Induced Dipole

• Hydrogen Bonding

Which of the following is an example of hydrogen bonding?

• CO₂

• NaCl

• H₂O

• CH₄

What type of reaction is represented by the equation BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl?

• Decomposition

• Combination

• Double Displacement

• Single Displacement