五上U3

五上U3

5th Grade

14 Qs

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五上U3

五上U3

Assessment

Quiz

Chemistry

5th Grade

Practice Problem

Medium

Created by

王岑娜 王岑娜

Used 2+ times

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14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

將泡過醋的鋼絲絨球固定在廣口瓶底,再將廣口瓶垂直倒放在裝有藍色水的透明淺盤中,20分鐘後,廣口瓶內的水位有什麼變化?

水位高度不變

水位變低

水完全乾涸

水位升高

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

下列常見的生活用品中,哪一項是利用製作合金的方式來防鏽?

不鏽鋼餐具

鑰匙

迴紋針

鐵晒衣架

3.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

空氣中因為具有哪一種氣體,所以容易使鐵生鏽?

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

讓鋼絲絨球在密封的瓶子內生鏽一段時間,然後將燃燒的線香伸進瓶中,線香會產生什麼變化?

燃燒更旺盛

立即熄滅

沒有變化

線香也生鏽了

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

下列哪一種保存鐵製品的方式,最容易讓鐵製品生鏽?

放進乾燥箱裡

放在浴室中

將鐵製品塗上油漆

放在塑膠袋裡

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

只有鐵才會生鏽,其他金屬都不會生鏽。

O

X

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

在鐵製品上塗抹酸性水溶液,可以防止鐵生鏽。

O

X

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