La vells review
what is formed when elements of matter are chemically combined?
ions
atoms
compounds
mixtures

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?

The molecular weight of carbon dioxide, co2, is 44.00 amu, and the molecular weight of nitrous dioxide, no2, is 46.01 amu, so no2 diffuses co2