
胡子玻璃
Interactive Video
•
Chemistry
•
10th Grade
•
Easy
郭政郎 郭政郎
Used 3+ times
FREE Resource
4 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
影片中第一次嘗試直接加熱沙子無法製成玻璃的原因是什麼?
沙子的量太少
熔爐的溫度不夠高
沙子不夠純淨
加熱時間不夠長
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
為了降低沙子的熔點,影片中加入了哪兩種添加物?
碳酸鈉和氧化鎂
氧化鈣和碳酸鉀
碳酸鈉和氧化鈣
二氧化矽和碳酸鈉
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在玻璃製造過程中,氧化鈣的主要作用是什麼?
增加玻璃的透明度
降低沙子的熔點
使玻璃不透水
增加玻璃的硬度
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
為什麼影片中第一次嘗試用海邊的沙子燒製玻璃時,無法成功將其完全熔化?
沙子中含有過多雜質。
加熱溫度不夠高。
沙子與坩堝發生化學反應。
沙子本身不適合燒製玻璃。
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