Chemical Reactions- Decomposition, Synthesis

Which type of reaction involves the exchange of ions between two compounds to form two new compounds?

• Synthesis reactions

• Double displacement reactions

• Decomposition reactions

• Combustion reactions

What type of reaction typically involves a substance combining with oxygen to release energy in the form of light or heat?

• Combustion reactions

• Synthesis reactions

• Single displacement reactions

• Double displacement reactions

Which of the following represents a synthesis reaction?

• AB → A + B

• A + B → AB

• AB + C → AC + B

• A + BC → AB + C

In the synthesis of sodium chloride, what state of matter is sodium in?

• Liquid

• Gas

• Solid

• Plasma

What is the product of the reaction between sodium (Na) and chlorine (Cl₂)?

• NaCl

• NaCl₂

• Na₂Cl

• Na₂Cl₂

What is the product of the reaction between magnesium (Mg) and fluorine (F₂)?

• MgF

• MgF₂

• Mg₂F

• Mg₂F₂

Which of the following is often required for a decomposition reaction to occur?

• A catalyst

• An energy source such as heat, light, or electricity

• A solvent

• A high pressure environment

Which of the following is an example of a decomposition reaction?

• 2H₂ + O₂ → 2H₂O

• CaCO₃ → CaO + CO₂

• NaCl + AgNO₃ → NaNO₃ + AgCl

• N₂ + 3H₂ → 2NH₃

Which compound is likely to be a product in the decomposition of copper carbonate?

• Water

• Copper oxide

• Hydrogen gas

• Sodium chloride

What are the products formed when a metal oxide, such as MgO, reacts?

• Metal + CO₂

• Metal + H₂O

• Metal + O₂

• Metal oxide + H₂O