Chemical Reactions Test

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where one reactant breaks down into two or more products.

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.

Front

What are the coefficients needed to balance the equation N₂ + H₂ → NH₃?

Back

The coefficients needed are 1 for N₂, 3 for H₂, and 2 for NH₃.

Front

What is a single displacement reaction?

Back

A single displacement reaction is a type of chemical reaction where one element displaces another in a compound.

Front

What is the general form of a decomposition reaction?

Back

The general form of a decomposition reaction is AB → A + B, where AB is a compound that breaks down into its elements.

Front

What is the general form of a double replacement reaction?

Back

The general form of a double replacement reaction is AB + CD → AD + CB, where two compounds exchange components.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations is important because it ensures the law of conservation of mass is upheld, meaning the number of atoms of each element is the same on both sides of the equation.

Front

What is the role of coefficients in a chemical equation?

Back

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

Front

What type of reaction is represented by the equation 2 K + MgBr₂ → 2 KBr + Mg?

Back

This is a single displacement reaction.

Front

What is the difference between a synthesis reaction and a decomposition reaction?

Back

A synthesis reaction combines two or more substances to form a new compound, while a decomposition reaction breaks down a compound into simpler substances.