已知①食盐,②氯化铵溶液,③葡萄糖,④甲烷,⑤碳酸钠溶液,⑥金刚石,

已知①食盐,②氯化铵溶液,③葡萄糖,④甲烷,⑤碳酸钠溶液,⑥金刚石,⑦石墨试从上述物质中选择适当的编号填空:

1)人体重要的能量来源________;(2)溶液使紫色石蕊变蓝的是________

3)溶液 pH7的是________;(4)“西气东输”工程所输送的气体________

5)属于有机物的是_______       6)能做铅笔芯的是_________

答案

1) ③,

2) ⑤,

(3) ②,

4) ④,

5) ③④,

6) ⑦

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