Chemical Reaction

What is a chemical reaction?

A chemical reaction is a process where reactants transform into products, involving the breaking of bonds in reactants and the formation of new bonds in products.

What are the signs of a chemical reaction?

Common signs include color change, temperature change, gas production, and the formation of a precipitate.

What are the basic types of chemical reactions?

The basic types include synthesis, decomposition, single replacement, double replacement, and combustion reactions.

What is an example of a synthesis reaction?

An example is the formation of water from hydrogen and oxygen: $2H_2 + O_2 \rightarrow 2H_2O$.

What is an example of a decomposition reaction?

An example is the breakdown of water into hydrogen and oxygen: $2H_2O \rightarrow 2H_2 + O_2$.

What is an example of a combustion reaction?

An example is the combustion of methane: $CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O$.

What is an example of a single replacement reaction?

An example is the reaction of zinc with hydrochloric acid: $Zn + 2HCl \rightarrow ZnCl_2 + H_2$.

What is an example of a double replacement reaction?

An example is when silver nitrate reacts with sodium chloride: $AgNO_3 + NaCl \rightarrow AgCl + NaNO_3$.