#035: Balancing Basic Equations

Front

What are the products in the reaction: Au₂S₃ + H₂ → ?

Back

Gold and hydrogen sulfide.

Front

What are the coefficients in the balanced equation: CaCO₃ + LiC₂H₃O₂ → Ca(C₂H₃O₂)₂ + Li₂CO₃?

Back

1, 2, 1, 1.

Front

Which of the following represents the number of atoms in a balanced equation? Superscripts, Coefficients, or Subscripts?

Back

Subscripts.

Front

Which formula has the greatest number of nitrogen atoms: (NH₃)₃, 2NH₃, 6NO₂, or 4N₂?

Back

4N₂.

Front

What are the coefficients in the balanced equation: Fe + O₂ → Fe₂O₃?

Back

4, 3, 2.

Front

Define a balanced equation.

Back

A balanced equation has equal numbers of each type of atom on both sides of the equation.

Front

What is the purpose of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction.

Front

What is the difference between subscripts and coefficients?

Back

Subscripts indicate the number of atoms in a molecule, while coefficients indicate the number of molecules.

Front

What does the law of conservation of mass state?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

How do you determine if a chemical equation is balanced?

Back

Count the number of atoms of each element on both sides of the equation.