A solution with a pH value which is less than 7 is acidic. The acids which react with metals usually have quite a low pH, of either 3 or less. Some metals react with acids and when they do the ...

Science presenter Jon Chase demonstrates an exothermic and an endothermic reaction, and explains how temperature changes can be used to identify which reaction is which. The exothermic reaction is the ...

THE corrosion of a metal in acid solution involves essentially the transfer to another species of one or more electrons by the metal atom, followed by solvation in the aqueous solution. In order to ...

Explain to pupils that our stomachs contain hydrochloric acid. The following reaction could be demonstrated by the teacher or carried out by pupils in small groups. (Eye protection and caution needed ...

The humble stir bar is a ubiquitous workhorse of the chemistry lab that has swirled its way into researchers’ hearts. But it seems that magnetic stirrers have also been mixing things up in a different ...