Move references and set correct book metadata

chapters/99-0-chemicals.md

@@ -1,3 +1,5 @@
 # Chemicals
 
-In pyrotechnics specific chemicals are used for different effects and as helpers during manufacturing like solvents.
+A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be simple substances, chemical compounds, or alloys.
+
+In pyrotechnics specific chemicals are used for different effects, and some as helpers during manufacturing like solvents and binders.

chapters/99-1-chemical-ethanol.md

@@ -1,17 +1,21 @@
 ## Ethanol
 
-Formula: 
+**Formula**
-C2H5OH
+ 
+$C2H5OH$
 
-Synonyms: 
+**Synonyms**
+ 
 Alcohol, undenatured, Ethyl Alcohol, Dehydrated Alcohol
 
-Description: 
+**Description**
+ 
 Ethanol is used as a solvent. Red gum and shellac, two common binders both dissolve in ethanol well. Ethanol/water mixtures are also often used since the ethanol increases the 'wetness' of the water (it reduces the surface tension of the water) and reduces the solubility of common oxidisers.
 
-**Sources:** 
+**Sources** 
 
 Chemically pure ethanol can be quite expensive due to increased tax, unless it is used for laboratory purposes. Denaturated alcohol (usually a mixture of ethanol and methanol) has been made undrinkable and therefore a lot cheaper. It can be used for pyro purposes. Some types of denaturated alcohol exist with other chemicals mixed in besides methanol to make it undrinkable and recognisable as such (colorants etc). I have no idea what these extra additives are and whether they can cause problems in compositions. I have been using 'spiritus' (a well known type of denaturated alcohol in the Netherlands) for several years without problems.
 
-Hazards: 
+**Hazards**
+ 
 Ethanol is flammable and volatile. Ethanol vapour is heavier than air and spreads over the ground. Provide adequate ventilation when working with ethanol

chapters/999-references.md

@@ -13,3 +13,4 @@
 
 ## Wikipedia
 
+- [Chemical substance](https://en.wikipedia.org/wiki/Chemical_substance)

metadata.yml

@@ -1,9 +1,9 @@
 ---
-title: My book title
+title: Pyrotechnics Revived 
-author: Daniel Herzog
+author: PureChemical
 rights: MIT License
 lang: en-US
-tags: [pandoc, book, my-book, etc]
+tags: [pandoc, book, pyro, pyrotechnics]
 abstract: |
   Your summary.
 mainfont: DejaVu Sans