The smallest particle of a substance that still retains the properties of that substance

2. how is heavy water different from normal water

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town