Chemical Reactions Quiz 2

In a balanced chemical equation,

• atoms are conserved
• coefficients are equal
• molecules are equal
• energy is not conserved

When the equation Al + Br₂ → AlBr₃ is balanced, the coefficient for Al is

• 1
• 2
• 3
• 4

The reaction in which hydrogen and oxygen are produced by running an electric current through water is an example of

• single replacement
• decomposition
• synthesis
• double replacement

A reaction that has two compounds as reactants and two compounds as products is most likely a

• synthesis reaction
• single replacement reaction
• double replacement reaction
• decomposition reaction

A number written in front of a chemical formula is a(n)

• coefficient
• Antoine Lavoisier
• conservation of mass
• yields
• 6

The principle that states that matter is neither created nor destroyed during a chemical reaction is called the law of

• conservation of mass
• coefficient
• Antoine Lavoisier
• yields
• 6

The production of carbon dioxide during the burning of a fuel is an example of a(n) reaction.

• synthesis
• coefficient
• Antoine Lavoisier
• conservation of mass
• yields

In a chemical equation, the arrow is read as

• yields
• coefficient
• Antoine Lavoisier
• conservation of mass
• 6

In the balanced chemical equation for the formation of ammonia (NH₃) from nitrogen (N₂) and hydrogen (H₂), the sum of the coefficients is

• 6
• coefficient
• Antoine Lavoisier
• conservation of mass
• yields

The law of conservation of mass was first demonstrated by the French chemist

• Antoine Lavoisier
• coefficient
• conservation of mass
• yields
• 6