Take care to use the word 'dilute' correctly. It can be used as an adjective to describe the concentration of a solution (as here), or as a verb to describe the process of adding more water to a ...

Under Trump, the N.I.H. is encouraging alternatives that use human cells rather than dogs, cats and monkeys. By Deborah Blum It’s easy to understand why the Trump administration’s funding cuts to ...

the more vigorous its reactions are the more easily it loses electrons in reactions to form positive ions (cations) The table summarises some reactions of metals in the reactivity series. Hydrogen and ...