第四單元防鏽與食品保存

Quiz
•
Science
•
5th - 6th Grade
•
Medium
黃秀菊 黃秀菊
Used 19+ times
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
1.生鏽的物品大部分是什麼材質?
塑膠
木頭
鐵
布
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
2.鐵製品生鏽有什麼特徵?(複選)
顏色變成紅棕色或褐色
摸起來粗粗的凹凸不平
表面更有光澤
用力摸會有鐵屑掉下來
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
那些因素會影響鋼棉生鏽?(複選)
水分
空氣
酸性物質
鹽分
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小禎將兩個相同大小的鋼棉球一個沾水,一個不沾水,觀察生鏽情況。這個實驗的操作變因是哪一項?
空氣
酸性物質
水分
鹽分
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
小明想要實驗酸性物質會不會影響鋼棉生鏽?這個實驗的控制變因會有那些?(複選)
水分
空氣
酸性物質
鋼棉大小
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
造成金屬生鏽的氣體是哪一種?
氫氣
氮氣
氧氣
二氧化碳
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
鐵生鏽了會有什麼影響?(複選)
不美觀
看起來更漂亮
變得更堅固
容易碎裂影響安全
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