三年级科学酸与碱(1)
Quiz
•
Science
•
3rd Grade
•
Practice Problem
•
Medium
Mu Lan
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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
以下哪项是石蕊试纸的功用?
观察物质的形态
测量物质的质量
测试物质的化学性质
确认物质的导电能力
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
以下哪些是酸性物质的化学性质?
i 有酸味
ii 含有大量的碱
iii 能改变矿泉水的颜色
iv 使蓝色石蕊试纸变成红色
i 和 ii
i 和 iv
ii 和 iii
iii 和 iv
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
以下哪些是碱性物质的化学性质?
i 有苦味
ii 含有大量的酸
iii 能改变矿泉水的颜色
iv 使红色石蕊试纸变成蓝色
i 和 ii
i 和 iv
ii 和 iii
iii 和 iv
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
1.石蕊试纸有_______和______两种。
蓝色,红色
蓝色,蓝色
红色,红色
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2.石蕊试纸可用来分辨物质是______、_______或_______。
中性、磁性、碱性
酸性、雌性、碱性
碱性、磁性、酸性
酸性、中性、碱性
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
3.一般上带有苦味,模起来有滑溜的感觉。
碱性物质
酸性物质
中性物质
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
4.一般上带酸性。
碱性物质
酸性物质
中性物质
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