
國中自然2下ch1-1常見的化學反應
Authored by 翰林出版國中自然 翰林出版國中自然
Chemistry
8th Grade
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8 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
原子量並非原子的實際質量,而是原子質量的比較數值,請問目前以下列何者當作原子量的比較標準?
氫-1的原子量為1
氦-4的原子量為4
碳-12的原子量為12
氧-16的原子量為16
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
化學反應與物理反應的差異為反應中是否產生何種新的粒子?
分子
原子
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
物理變化發生前後,下列敘述何者正確?
原子數目發生改變
原子數目沒有變,分子數目改變
原子數目改變,分子數目沒變
原子數目與分子數目都沒變
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
鋼絲絨生鏽質量變大,這是因為鋼絲絨生鏽時怎麼了?
與氧氣和水氣化合
發生物理變化
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在10公升密閉容器內,放著一塊10立方公分的乾冰,加熱使它由固態變成氣態。此乾冰在狀態變化過程中,保持不變的物理量為下列何者?
體積
比熱
密度
分子數
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
化學反應中反應物與生成物之間,可能會改變的是下列何者?
原子種類
原子個數
原子間結合方式
總質量
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一個現象,不是因為化學變化?
生米煮成熟飯
生雞蛋煮成了水煮蛋
自來水煮沸成開水
國慶日的絢爛煙火
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