Students use Snap Cubes to make models of atoms and molecules. They are given white, red, blue, and black cubes that represent hydrogen, oxygen, nitrogen, and carbon atoms respectively. Students are ...

It consists of just a few kinds of atoms: carbon, hydrogen, oxygen, nitrogen, and phosphorus. Combinations of these atoms form the sugar-phosphate backbone of the DNA -- the sides of the ladder ...

Iron is Fe and oxygen ... word formula. If we're talking about more than one formula, we usually say formulae. Each ammonia molecule contains one atom of nitrogen and three atoms of hydrogen.

Urey figured that the trace oxygen, nitrogen, and carbon would be bound with hydrogen and exist as water, ammonia, and methane. With so much hydrogen around, free oxygen could not exist (it would ...