【英语】求高人挑文章语法、单词毛病

RT,本文是美高校化学教材Chemistry:theCentralScience上的一篇稍作改动的引文,想把它作为课文来学,望各位高手能拿中国的英语语法、单词考试的角度批判这篇文章中的,相对于国内课文来说不严谨的用法或是过于偏僻的用法,

（nitricacid：uncountablen.硝酸）

MyFirstExperiencewithChemicalReactions

byIraRemsen—Chemistry:TheCentralScience

Whilereadingatextbookofchemistry,Icameuponthestatement‘nitricacidactsuponcopper,’andIdeterminedtoseewhatthismeant.Havinglocatedsomenitricacid,Ihadonlytolearnwhatthewords‘actupon’meant.IntheinterestofknowledgeIwasevenwillingtosacrificeoneofthefewcoppercentstheninmypossession.Iputoneofthemonthetable,openedabottlelabeled“nitricacid,”pouredsomeoftheliquidonthecopper,andpreparedtomakeanobservation.ButwhatwasthiswonderfulthingwhichIbeheld?Thecentwasalreadychanged,anditwasnosmallchangeeither.Agreenish-blueliquidfoamedandfumedoverthecentandoverthetable.Theairbecamecoloreddarkred.Howcouldstopthis?Itriedbypickingthecentupandthrowingitoutthewindow.Ilearnedanotherfact:nitricacidactsuponfingers.Thepainledtoanotherunpremeditatedexperiment.Idrewmyfingersacrossmytrousersanddiscoverednitricacidactsupontrousers.ThatwasthemostimpressiveexperimentIhaveeverperformed.Itellofitevennowwithinterest.Itwasarevelationtome.Plainlytheonlywaytolearnaboutsuchremarkablekindsofactionistoseetheresults,totheexperiment,toworkinthelaboratory.

呃...主语I那个是我打字疏忽.