初一上册 综合 科学第8章:物质常见的性质
Quiz
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Science
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7th Grade
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Practice Problem
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Medium
WEE PENG GOW
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15 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
小美同学对冰加热,她将冰熔化成水直到沸腾的过程,绘制成图2所示的温度随时间变化的图像,下列分析正确的是__。
图像中的DE段是冰的熔化过程
AB、CD段物质在吸热,BC、DE段物质没有吸热
水的凝固点是0
BC段物质的温度保持不变,热能不变
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
下列自然现象中,属于熔化现象的是_____________。
春天,冰雪消融
夏天,露水晶莹
秋天,薄雾缥缈
冬天,瑞雪纷飞
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
严冬,戴眼镜的人从寒冷的户外进入温暖的房间,镜片上会雾蒙蒙的,这是因为____________。
水蒸气遇冷放热液化成水附着在镜片上
空气遇冷放热液化成液态空气附着在镜片上
热气附着在镜面上
以上说法都不对
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
下列现象中都发生了物态变化,其中属于升华的是_____________。
冰块吸热后逐渐熔化
江面上逐渐形成了大雾
擦在玻璃上的酒精很快干了
樟脑丸放了一段时间会变小
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
夏天,加在鲜榨椰汁中的冰块化成水,此过程冰块发生的物态变化是______________。
凝固
汽化
熔化
液化
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
下列哪一种现象属于凝华?
草地上形成露水
冬天早晨看见的霜
冬天河流结冰
冬天下雪
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
在夏天会看到冰棍冒出白色的“气”,这是因为____________。
冰棍周围空气中的水蒸气液化而成的小水珠
冰棍升华产生的小冰晶
冰棍熔化成小水珠
冰棍蒸发产生的水蒸气
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