
8下1-2(1)分子量
Interactive Video
•
Science
•
8th Grade
•
Hard
怡馨 黃
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
本單元主要探討化學反應的微觀世界,其中不包含下列哪個主題?
原子量與分子量的定義
反應式的書寫
化學計量
物質的分類
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
影片中提到,要快速清點大量硬幣,除了將硬幣分類外,還需要測量什麼?
每個硬幣的直徑
每個硬幣的厚度
每種硬幣的總質量
每個硬幣的材質
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
科學家利用類似清點硬幣的方法來測量原子,主要是因為原子的哪個特性?
原子非常微小且數量龐大
原子具有放射性
原子會不斷運動
原子種類繁多
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
目前國際上用來訂定原子量標準的原子是哪一種?
氫原子
氧原子
碳-12原子
鎂原子
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
碳原子量被訂為12,是作為原子量的什麼?
絕對標準
比較標準
質量單位
體積單位
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果碳的原子量被訂為12,那麼氧的原子量是多少?
1
14
16
32
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
分子量代表什麼?
分子中所有原子的體積總和
分子中所有原子的質量總和
分子中原子數量的總和
分子中質子與中子數量的總和
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