A simple demonstration of how a precipitate is evidence of a chemical reaction taking place is performed by mixing solutions of calcium chloride and sodium carbonate to form the precipitate calcium ...

The positive and negative ions attract each other and form the ionic compound sodium chloride. One calcium and two chlorine atoms are near each other. An electron from each atom feels the attraction ...

Students at the Academy for Science and Design in Nashua have won a competition that will allow them to send an experiment into space. Team Hydra designed an experiment studying the effects of ...

Sodium carbonate, Na 2 CO 3 ... The resin needs recharging with dishwasher salt (sodium chloride) once it becomes full of calcium ions.