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 ...

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

A new study provides fresh insight into traditional acid-base chemistry by revealing that the mutual neutralization of ...

Ocean acidification, caused by the ongoing absorption of atmospheric CO₂, poses threats to marine ecosystems and biodiversity ...

but while the Echo Dot is round, the Echo Pop has a flat face. It basically looks like a cross-section of the Dot. The Echo Dot (left) and Echo Pop (right) — as you can see, the Dot has been ...