2010年山东省临沂市中考化学试题及答案
2010年临沂市中考化学试题可能用到的相对原子质量:H1C12O16S32K39Ca40Ba137一、选择题(共18分)1、下列变化属于物理变化的()A.食物腐烂B.钢铁生锈C.酒精挥发D.蜡烛燃烧2、在下列物质中,属于化合物的是()A.液氧B.生铁C.石油D.干冰3、被病菌污染的粮食会产生黄曲霉素,其化学式为C17H12O6,人类的特殊基因在黄曲霉素作用下会发生突变,继而诱发癌症。下列关于黄曲霉素的说法中错误的是()A.黄曲霉素属于有机化合物B.黄曲霉素由碳、氢、氧三种元素组成C.黄曲霉素中含有17个碳原子、12个氢原子和6个氧原子D.黄曲霉素中碳氢氧三种元素的质量比为17:1:84、下列实...
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