Chemical and physical properties are used to help identify substances. A substance's chemical properties identify whether or not that substance reacts with another substance.

When will division i requirements change? requirements change every four years requirements change every year august 2016 requirements change every other year

Earth's atmosphere is unique among the planets and is able to support life because it contains a large amount of a) oxygen b) helium c) methane d) carbon dioxide

28. the new systematic nomenclature was so ( that many chemists preferred to ( the older trivial names that were at least shorter. at least, that is the ostensible reason. actually, tradition seems to carry more weight than ( with some scientists.