铝和氢氧化钠反应现象
1.开始( ){氧化膜与碱反应}
2.后来( ){铝与碱产生了气体}
3.试管( ){反应放热}
4.将点燃的木条放在试管口,有( ){生成了氢气}
人气:419 ℃ 时间:2020-05-01 07:02:32
解答
1.铝片慢慢溶解
2.产生大量气泡
3.试管壁发热
4.爆鸣声
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