diff --git a/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/i_chemical_reaction.md b/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/i_chemical_reaction.md
new file mode 100644
index 0000000000000000000000000000000000000000..9e1114d179c32c1e0c2aab6ec1f7461fd8ebd9f7
--- /dev/null
+++ b/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/i_chemical_reaction.md
@@ -0,0 +1 @@
+Defines chemical reaction.
diff --git a/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/t_first_order_rate_constant.md b/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/t_first_order_rate_constant.md
new file mode 100644
index 0000000000000000000000000000000000000000..db9e1384caa9c9097cdb24d074e2b7f2d33311cd
--- /dev/null
+++ b/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/t_first_order_rate_constant.md
@@ -0,0 +1 @@
+\copydoc ChemistryLib::SelfContainedSolverData::FirstOrderReaction::first_order_rate_constant
diff --git a/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/t_reaction_type.md b/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/t_reaction_type.md
new file mode 100644
index 0000000000000000000000000000000000000000..bb85a548842090fa13b2494bbe5046a11700d04d
--- /dev/null
+++ b/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/t_reaction_type.md
@@ -0,0 +1 @@
+specify the type of chemical reaction
diff --git a/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/t_stoichiometric_coefficients.md b/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/t_stoichiometric_coefficients.md
new file mode 100644
index 0000000000000000000000000000000000000000..cf9d6bd0c9454734c3067634350754a1cbd1f5d7
--- /dev/null
+++ b/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/chemical_reaction/t_stoichiometric_coefficients.md
@@ -0,0 +1 @@
+provide stoichiometric coefficient vector for a chemical reaction.
diff --git a/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/i_chemical_reactions.md b/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/i_chemical_reactions.md
new file mode 100644
index 0000000000000000000000000000000000000000..6e5684d22ce737c4a7b61a1968074df0231e0707
--- /dev/null
+++ b/Documentation/ProjectFile/prj/chemical_system/chemical_reactions/i_chemical_reactions.md
@@ -0,0 +1 @@
+define specification of chemical reactions.
diff --git a/Documentation/ProjectFile/prj/chemical_system/t_number_of_components.md b/Documentation/ProjectFile/prj/chemical_system/t_number_of_components.md
new file mode 100644
index 0000000000000000000000000000000000000000..2e6b7164417b1bf09615bb89a0b553a9044a764f
--- /dev/null
+++ b/Documentation/ProjectFile/prj/chemical_system/t_number_of_components.md
@@ -0,0 +1 @@
+specify number of components.