高一化學必修1 課時作業(yè)和單元檢測(31份).rar
高一化學必修1 課時作業(yè)和單元檢測(31份),課時作業(yè)1 化學實驗安全時間:45分鐘 滿分:100分一、選擇題(每小題4分,共48分,每題有1—2個選項符合題意)1.下列實驗操作正確的是( )a.當某實驗沒有明確的藥品用量說明時,為看到明顯現(xiàn)象,取用藥品越多越好b.取用細口瓶里的試液時,先拿下瓶塞,倒放在桌上,然后標簽朝外拿起瓶子,瓶口要緊挨著試管口,使液體緩...
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