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> 下列物态变化中属于升华现象的是()A.夏天,冰棍冒出的“白气”B.放在衣柜里面的樟脑丸变小了C.花盆中潮湿的泥土变干了D.冬天,湖面封冰-八年级物理
下列物态变化中属于升华现象的是()A.夏天,冰棍冒出的“白气”B.放在衣柜里面的樟脑丸变小了C.花盆中潮湿的泥土变干了D.冬天,湖面封冰-八年级物理
题目简介
下列物态变化中属于升华现象的是()A.夏天,冰棍冒出的“白气”B.放在衣柜里面的樟脑丸变小了C.花盆中潮湿的泥土变干了D.冬天,湖面封冰-八年级物理
题目详情
下列物态变化中属于升华现象的是 ( )
A.夏天,冰棍冒出的“白气”
B.放在衣柜里面的樟脑丸变小了
C.花盆中潮湿的泥土变干了
D.冬天,湖面封冰
题型:单选题
难度:中档
来源:不详
答案
B
试题分析:升华是物质从固态直接变为气态,中间没有液态出现。冰棍冒出的“白气”是水蒸气液化而成的;樟脑丸变小是升华;潮湿的泥土变干是泥土中的水汽化;冬天,湖面结冰是水的凝固。
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题目简介
下列物态变化中属于升华现象的是()A.夏天,冰棍冒出的“白气”B.放在衣柜里面的樟脑丸变小了C.花盆中潮湿的泥土变干了D.冬天,湖面封冰-八年级物理
题目详情
答案
试题分析:升华是物质从固态直接变为气态,中间没有液态出现。冰棍冒出的“白气”是水蒸气液化而成的;樟脑丸变小是升华;潮湿的泥土变干是泥土中的水汽化;冬天,湖面结冰是水的凝固。