Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table’s arrangement also allows scientists to discern trends in ...

Each ammonia molecule contains one atom of nitrogen and three atoms of ... In a symbol equation, substances are written using their chemical symbol or formula. A symbol equation should only ...

An element’s chemical symbol is a single capital letter or a capital letter followed by a lower case letter. What is carbon? Find out about the structure and properties of the element carbon.