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 ...

Symbol equations are a quick way of representing chemical reactions. They show us what atoms are involved and how they are bonded together. Symbol equations always take the form, reactants → ...

Scientists are narrowing down explanations for a potential chemical sign of ancient life on Mars. This sign – marks found on Martian rocks last year – could have been caused by microbes or by ...