Balancing and Reaction Types Pre-Test

Front

What is a Synthesis Reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more reactants combine to form a single product. Example: A + B → AB.

Front

What is a Decomposition Reaction?

Back

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products. Example: AB → A + B.

Front

What is a Combustion Reaction?

Back

A combustion reaction is a type of chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat. Example: CH₄ + 2O₂ → CO₂ + 2H₂O.

Front

What is a Single Replacement Reaction?

Back

A single replacement reaction is a type of chemical reaction where one element replaces another in a compound. Example: A + BC → AC + B.

Front

What is a Double Replacement Reaction?

Back

A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds. Example: AB + CD → AD + CB.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, ensure that the number of atoms of each element is the same on both sides of the equation by adjusting coefficients.

Front

What is the balanced equation for the reaction of Magnesium and Hydrochloric Acid?

Back

Mg + 2HCl → MgCl₂ + H₂.

Front

Identify the balanced equation: 2Na + 2H₂O → 2NaOH + H₂.

Back

This equation is balanced because there are equal numbers of each type of atom on both sides.

Front

What is the significance of coefficients in a balanced equation?

Back

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

Front

What is the product of the reaction: CF₄ + Br₂?

Back

The balanced equation is CF₄ + 2Br₂ → CBr₄ + 2F₂.