When metals react with acids, a salt of the metal and hydrogen gas are formed. We can investigate the reactivity of different metals by placing samples in acid and comparing the results.

When a small piece of sodium is placed in a petri dish with water and phenolphthalein, the sodium becomes a molten ball and darts around the dish, leaving a pink trail. The reactions of potassium, ...

The International Council on Mining and Metals (ICMM) and the International Network for Acid Prevention (INAP) have launched a new resource to help […] ...