問題詳情
22. 有關物質的變化，下列敘述何者正確？
(A)元素和化合物都是純物質
(B)物質在經歷物理變化時，其組成不變，但物理狀態會改變
(C)可以利用密度來鑑定特定的元素或化合物
(D)10mL 的酒精加入 10mL 的水中，體積等於 20mL
(E)水溶液沸騰時，溫度會逐漸上升
(A)元素和化合物都是純物質
(B)物質在經歷物理變化時，其組成不變，但物理狀態會改變
(C)可以利用密度來鑑定特定的元素或化合物
(D)10mL 的酒精加入 10mL 的水中，體積等於 20mL
(E)水溶液沸騰時，溫度會逐漸上升
參考答案
答案：A,B,C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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