Categories
Food Chemistry

Why Does Asparagus Make Urine Smell? – The Chemistry of Asparagus

The latest food chemistry graphic looks at the chemistry of asparagus – specifically, why it causes the urine of some (but not all) people to smell. Over the past forty years several papers have been published on the subject, and several studies undertaken, to try and determine the chemical compounds responsible, and though there is […]

Categories
Colourful Chemistry Inorganic Chemistry

Metal Ion Flame Test Colours Chart

This graphic looks at the colour of various metal and metalloid ions that occur during flame tests. Most people probably remember doing this experiment in school chemistry lessons, if not with the full range of ions shown here, but for the uninitiated a brief explanation of the origin of the colours follows.

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Food Chemistry

Polyphenols & Antioxidants – The Chemistry of Tea

After looking at the chemistry of coffee in the previous post, it seemed only fair to also consider the chemistry of tea, just so all the tea drinkers out there don’t feel left out. Much like coffee, tea contains a hugely wide variety of chemical compounds, but some of the most important in terms of […]

Categories
Food Chemistry

Why is Coffee Bitter? – The Chemistry of Coffee

Mention coffee, and caffeine is the chemical compound name that immediately springs to mind. However, whilst caffeine’s effects on the brain are well documented – it binds to adenosine receptors in the brain – it has relatively little impact when it comes to the taste of coffee. Coffee, as it turns out, is a cornucopia […]

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Infographics

Element Infographics – Teaching Versions

After a suggestion over on the facebook page for the site, I decided to make some fill-in-the-blanks style teaching versions of the element infographics for teachers. These could be used as part of a research task on the different groups of elements in the Periodic Table. There’s a sheet for each of the groups, and […]

Categories
General Chemistry

Timeline of the Elements: Dates & Countries of Discovery

This graphic looks at the discovery dates of the elements, as well as the countries in which they were discovered, and plots them all on a timeline to give some idea of the order of discovery. To see a larger view of the image, click the image above to view it full sized.