Another prompt

Laboratory was the #30daysketchbookchallenge for today. I decided to draw some glass vessels full of coloured liquids. I suppose that’s the stereotypical image people have of the equipment in laboratories, but they come in all sorts of types, for physics, chemistry, biology, geology, archeology, with lasers, scanning electron microscopes, x-ray machines, burettes and pipettes….. So much to find out about the world around us…

Chemicals

sketch-1563553239030

One thing I hear a lot of nowadays is, I can’t eat that it’s got chemicals in it.

I agree that some things are not good for you. But that’s not because of ‘chemicals’. Why? Because unless you try and live on sunshine (some people do, believe it or not ) everything is made of chemicals, that’s because it’s made of atoms and molecules that make up the basic building blocks of the world.

Atoms and molecules? Single chemicals are elements, and if you have more than one sort, joined together they make compounds.

Oxygen is an element, hydrogen and oxygen is water, H2O. The air we breathe is made of chemicals… Nitrogen, oxygen, carbon dioxide, argon and other trace elements.

Food is made of chemicals, mixtures and aggregations of elements and compounds, from meat to yoghurt, lettuce to lemon merangue to coffee or tea. It’s only when things are added that food can become bad for you. Like if you treat vegetable oil (made if chemicals) to make it harder you get hydrogenated vegetable oil, which is bad for you as it can clog arteries.

We have to be aware of what is good and bad for you, but using a generic term about chemicals does not help clarify the issue.