3C 13.3 化合物和混合物 WB
9th Grade
•20 Qs
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3C 13.3 化合物和混合物 WB
Quiz
•
Science
•
9th Grade
•
Practice Problem
•
Hard
Luk Chan
Used 1+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
化合物是由兩種或以上的元素組合而成的物質。
正確
不正確
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
在化學變化的過程中，會有最少一種新物質產生。
正確
不正確
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
化合物與其成分元素通常具有相同的性質。
正確
不正確
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
在混合物中，各成分物質仍保留其原有的性質。
正確
不正確
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
以下哪項有關化合物與其成分元素的組合是正確的？
A. 二氧化碳的成分元素是碳和氫
B. 粉筆的成分元素是鈣、氫和碳
C. 石英的成分元素是硅和氫
D. 食鹽的成分元素是鈉和氯
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
以下哪項組合正確顯示P、Q和R？
P: 元素
Q: 化合物
R: 混合物
P: 元素
Q: 混合物
R: 化合物
P: 混合物
Q: 元素
R: 化合物
P: 混合物
Q: 化合物
R: 元素
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
蔗糖的化學式是C12H22O11。當蔗糖在空氣中燃燒時，會產生二氧化碳和水。以下 哪些有關蔗糖的敘述是正確的﹖
(1) 每個蔗糖分子含有22個氫原子。
(2) 蔗糖由兩種元素組合而成。
(3) 燃燒蔗糖是化學變化。
A. 只有(1)和(2)
B. 只有(1)和(3)
C. 只有(2)和(3)
D. (1)、(2)和(3)
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