As the world moves toward renewable energy, there's a growing need for effective ways to store electricity. Renewable sources ...

So why do so many life-forms breathe oxygen? There are probably thousands of kinds of metabolisms, or chemical processes that ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Oxygen is a very reactive element, so why do so many lifeforms breathe it?. | Credit: Dave ...

The dot and cross diagram shows that a water molecule is made up of one oxygen atom joined to two hydrogen atoms, so the formula of water is H 2 O. A nitrogen molecule is made up of two nitrogen ...

The major use of chlorine dioxide is as a bleach in a number of industries: in cleaning and de-tanning of leather, and as a bleaching agent for wood pulp, fats and oils, cellulose, flour, textiles, ...

Instead of trying to remember lots of different dot and cross diagrams, it may help to understand how to draw them.