2020年青海省中考化学试卷(省卷)【原卷版】
2020年青海省中考化学试卷一、单项选择题(本题共14小题,1-8题每题1分,9-14题每题2分,共20分。)1.(1分)下列过程中,只发生物理变化的是( )A.青稞酿酒B.滴水成冰C.铁钉生锈D.红磷燃烧2.(1分)空气中含量最多且化学性质不活泼的气体是( )A.O2B.CO2C.N2D.Ne3.(1分)下列属于复合肥料的是( )A.KNO3B.NH4HCO3C.Ca(H2PO4)2D.K2SO44.(1分)下列生活用品中属于有机合成材料的是( )A.纯棉毛巾B.塑料袋C.蚕丝被D.不锈钢餐具5.(1分)2020年6月,袁隆平科研团队首次在青藏高原柴达木盆地试种海水稻。稻谷中富含的淀...
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