balancing and reaction types

Front

What is the principle of conservation of mass?

Back

Matter is not created or destroyed in a chemical reaction.

Front

What type of reaction is represented by the equation A + B → AB?

Back

Synthesis reaction.

Front

What type of reaction is represented by the equation C7H14 + O₂ → CO₂ + H₂O?

Back

Combustion reaction.

Front

How do you balance the equation Al + HCl → H2 + AlCl3?

Back

2, 6, 3, 2.

Front

Which of the following is an unbalanced equation? 2Na + 2H2O → 2NaOH + H2

Back

This equation is unbalanced.

Front

What is a decomposition reaction?

Back

A reaction where a single compound breaks down into two or more simpler products.

Front

What is a single replacement reaction?

Back

A reaction where one element replaces another in a compound.

Front

What is a double replacement reaction?

Back

A reaction where two compounds exchange ions or bonds to form two new compounds.

Front

What is the general form of a combustion reaction?

Back

A hydrocarbon reacts with oxygen to produce carbon dioxide and water.

Front

What is the difference between a balanced and unbalanced equation?

Back

A balanced equation has equal numbers of each type of atom on both sides, while an unbalanced equation does not.