初一科学 小测验 2 (第 8 章)
Quiz
•
Science
•
7th - 8th Grade
•
Practice Problem
•
Hard
Lim TL 林導龙
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20 questions
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1.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
明矾、金属、水晶等物体都是常见的 _____ 因为它们都有一定的凝固点和熔点。
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
下列哪种液体可以导电?
*(答案可超过一个)
血液
纯水
盐水
糖水
3.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
美琪很喜欢喝碳酸饮料例如可口可乐和雪碧,她时常在饮用之前先摇一摇饮料瓶再打开放气,这动作其实可将饮料的pH值变大,减少饮料的 _____ 。
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
在进行物质分类的时候,以下哪种物质属性比较适合用来区分塑料和铜片?
*(答案可超过一个)
酸碱性
导热性
导电性
溶解性
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
在干旱季节时,干冰常用于人工降雨。
下列哪些变化牵涉于人工降雨的过程?
*(答案可超过一个)
升华
凝华
蒸发
液化
6.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
通过实验,小兰发现食用油不能溶解于水中,却能溶解于 _____ 。这证明有些液体不一定只是溶解固体,也能溶解其他液体。
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
伟明利用pH试纸测试某一物体的pH值,结果试纸显示橙色。
预测下列哪一pH数值最适合配于此颜色?
0 ~ 1.5
2.5 ~ 4
5.5 ~ 6
6 ~ 7
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