
南一國中自然2下_ch4-2
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Hard
南一 自然
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在Na2S2O3+2HCl → 2NaCl+SO2+H2O+S反應中,若欲觀察反應的速率,則應觀察下列哪一項會比較明顯而容易?
Na2S2O3的消耗量
SO2的生成量
H2O的生成量
S的生成量
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將雙氧水塗在受傷流血的皮膚上會很快的冒出氣泡,下列敘述何者錯誤?
此氣泡為氧氣
血液內含有使雙氧水分解的催化劑
血液中含有二氧化錳
此氣泡可以殺菌
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
溫度升高,反應速率增大,主要是反應物粒子的何項因素改變所致?
顆粒變小
粒子能量增加
碰撞次數減少
表面積減少
4.
MULTIPLE CHOICE QUESTION
0 sec • 1 pt
有關催化劑的性質,下列敘述何者正確?
沒有參與反應
反應前後質量改變
反應前後化學性質不變
能增加生成物的產量
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若以Na2S2O3溶液與HCl溶液進行化學反應,當增加溶液溫度時,下列哪個物理量變化的敘述有誤?
反應時間增加
反應速率變快
反應時間的倒數變大
生成量不變
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
硫代硫酸鈉與鹽酸反應會產生黃色沉澱物S,若欲增加S的沉澱量,則可以下列哪一種方式達成?
加入水
加入SO2
加入鹽酸
加入二氧化錳當催化劑
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
人類的唾液中含有澱粉酶,可以把澱粉分解為麥芽糖。此原理與下列何者較為相近?
黃金因為不易與氧反應,所以被用來製成戒指
鐵粉較鐵塊容易氧化
藍墨水在熱水中擴散速率較快
在雙氧水製氧的實驗中,可以利用二氧化錳來加快反應速率
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