问题标题：
【whatisasubscriptinachemicalformula?what'stherelationshipbetweenelementandstom?我科学作业做不出~~~Science!还有几个问题：Howtotellasubstanceisacompoundornotacompound?Howdoesthedensitymakethingssinkoffloat】
问题描述：
whatisasubscriptinachemicalformula?what'stherelationshipbetweenelementandstom?
我科学作业做不出~~~Science!
还有几个问题：
Howtotellasubstanceisacompoundornotacompound?
Howdoesthedensitymakethingssinkoffloatinaliquid?
chemicalformula:carbondioxideozonebackingsoda
答对一定加分!
李锡文回答：
asubscriptofachemicalformulaisthenumberofatomsoftheelement.chemicalelementisthegenerictermsofakindofatomthatwiththesameinuclearcharge.andatomisthesmallestparticlesin...
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