
B3C2_練習用
Authored by chungtsen chen
Physics, Chemistry
8th Grade
Used 4+ times

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29 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將重量百分濃度為 20%的糖水 100 g,加入適量純水稀釋至 5%,稀釋後的糖水中各含有多少的糖和水?〔100. 基測Ⅰ〕
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一項需要以非水溶劑,才能進行溶解?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有關物質之化學性質敘述,下列何者正確?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
碳酸鈣與氯化鈣兩種固態粉末混合,如圖為此混合粉末分離的實驗步驟,則圖中 W、X、Y、Z 主要各為何種物質?〔100. 基測Ⅰ〕
W 為碳酸鈣、Y 為水、Z 為氯化鈣
W 為碳酸鈣、Y 為氯化鈣、Z 為水
X 為氯化鈣水溶液、Y 為碳酸鈣、Z 為水
X 為氯化鈣水溶液、Y 為水、Z 為碳酸鈣
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(甲)冰的熔化;(乙)碘的昇華;(丙)汽油揮發;(丁)蛋白質在胃腸中的消化;(戊)金飾物的打造;(己)米煮成飯。以上屬於化學變化的有幾種?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有一飽和硫酸銅水溶液(藍色),如圖所示,在溫度不變時若增加水量,經充分攪拌後,仍有固體殘留,則下列敘述何者正確?〔102.臺中爽文〕
溶解量增加,顏色不變
溶解量不變,顏色改變
溶解量及顏色均改變
溶解量及顏色均不變
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
四種不同的純物質各取 10 g,於水溫 25℃時,分別放入各盛有 10 mL 水的甲、乙、丙、丁四個燒杯中,充分攪拌後,以濾紙過濾未溶解的固體,將濾紙烘乾,稱得未溶解固體的質量如附表。關於此四杯溶液的敘述,下列何者正確?〔98. 基測Ⅰ〕
丙杯的溶解度最小
各溶液均為飽和溶液
丁杯的重量百分濃度最大
若水溫升高,各溶液的溶解度不變。
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