

B3C2_物質的世界
Interactive Video
•
Science
•
8th Grade
•
Practice Problem
•
Hard
chungtsenchen01 chungtsenchen01
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
固態、液態和氣態的分子排列有何不同?
固態分子排列隨意,液態分子排列整齊
固態分子排列整齊,液態分子自由移動
液態分子排列隨意,氣態分子排列整齊
氣態分子排列整齊,固態分子自由移動
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物理變化和化學變化的主要區別是什麼?
物理變化會改變物質的內在組成
化學變化不會改變物質的內在組成
物理變化不改變物質的內在組成
化學變化不會產生新物質
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什麼是純物質的特徵?
成分單一,性質固定
成分多樣,性質固定
成分多樣,性質不固定
成分單一,性質不固定
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
空氣中含量最多的氣體是什麼?
二氧化碳
氫氣
氮氣
氧氣
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
PM2.5對健康有何影響?
能被鼻毛阻擋,無法進入肺部
只會影響皮膚
無影響,因為它太小
能進入肺部深處,造成健康危害
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