diff --git a/science-of-cleaning.tex b/science-of-cleaning.tex
index 445b491..0dabbf6 100644
--- a/science-of-cleaning.tex
+++ b/science-of-cleaning.tex
@@ -26,7 +26,7 @@
 % \usepackage{gensymb} % Just for the degree symbol
 % \usepackage{ccicons} % Creative Commons icons; now we can delete an image
 % \usepackage{lettrine} % Drop caps
-% \usepackage{wrapfig} % Let's wrap some images
+\usepackage{wrapfig} % Let's wrap some images
 % \usepackage{hanging} % For hanging indents in a script
 % \usepackage{fancyvrb} % Use line numbers with code samples
 % \usepackage{fvextra} % Break lines inside Verbatim environment:
@@ -39,6 +39,8 @@
 % \usepackage{tabularray} % Easy tables
 \usepackage[]{footmisc}
 \usepackage{tikz}
+\usepackage{chemformula}
+\usepackage{chemfig}
 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -263,16 +265,30 @@ In both of these examples, the values are getting closer to seven, which means t
 
 
 
-\Chapter{Acid Cleaners}{Vinegar is your friend}
+\chapter{Acid Cleaners}
+
+The most common acidic cleaner, and also the cheapest, is good old white vinegar. Scientists usually call it \textit{acetic acid}, although its official name\footnote{according to IUPAC, that is} is \textit{ethanoic acid}. Its chemical formula is \ch{CH3COOH} and as you can probably guess, it's a small molecule that looks like this:
+
+\begin{wrapfigure}[10]{l}[0pt]{30mm}
+\centering
+\chemfig[atom sep=2.5em]{C(-[:90]H)(-[:180]H)(-[:270]H)-C(=[:45]O)(-[:-45]OH)}
+\caption{Chemical structure of acetic acid}
+\end{wrapfigure}
+
+Most commercial white vinegar available in your local grocery store contains 4-5\% acidity; that is, most of what you are buying is water and only 4-5\% of it is actually acetic acid.
 
 
-\Chapter{Alkaline Cleaners}{When acids just won't cut it}
+\chapter{Alkaline Cleaners}
 
 
-\Chapter{Surfactants}{i.e., Soaps and detergents}
+\chapter{Surfactants}
+
+\paragraph{Soaps and detergents, that is}
 
 
-\Chapter{Abrasive Cleaners}{Scrub-a-dub-dub}
+\chapter{Abrasive Cleaners}
+
+\paragraph{Scrub-a-dub-dub}
 
 
 \chapter{Heat}