Categories
Aroma Chemistry

Why Does Bacon Smell So Good? – The Aroma of Bacon

When it comes to breakfasts, there are few aromas better than that of bacon, sizzling and crisping in a pan. As part of a brief new series looking at the chemicals behind aromas, this graphic considers the chemicals that lend bacon it’s characteristically mouth-watering scent.

Categories
Colourful Chemistry

‘Poisonous’ Poinsettia pH Indicators

I’m making pH indicator paper with some of my classes this week, using the coloured leaves of red poinsettia plants, which set me thinking about the chemistry behind why these plants can be used as indicators. Poinsettias have a reputation for being poisonous – a claim that is in fact entirely unfounded. A quick google […]

Categories
General Chemistry

Element Infographics – Group 1

This is one of the infographics I’ve been making as part of a classroom display. I wanted to display all the key points about each group of elements, in a way that was both clear and engaging for the pupils – as a consequence, the information presented is relatively basic, so that it’s accessible for […]

Categories
Inorganic Chemistry

Removing Tarnish from Silver

Silver tarnishes in air to form a black coating of silver sulphide, which has the formula Ag2S. The chemical equation for the formation of silver tarnish following reaction with hydrogen sulphide (H2S) is as follows: 2 Ag(s) + H2S(g) → Ag2S(s) + H2(g) There’s speculation that, in the present day, tarnishing of silver actually occurs more quickly due […]