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12.下列關於物質發生化學變化產生新物質的敘述,何者正確? (A)原子種類發生變化 (B)原子總數目發生變化 (C)每一個原有的原子分裂,產生新原子 (D)原子重新排列,反應前後原子數目、種類不變
問題詳情
12.下列關於物質發生化學變化產生新物質的敘述,何者正確?
(A)原子種類發生變化
(B)原子總數目發生變化
(C)每一個原有的原子分裂,產生新原子
(D)原子重新排列,反應前後原子數目、種類不變
參考答案
答案:D
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X(A)物質X匱乏時,冰棒即是美食☆ →...
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1. 在接近滿載排水量時增加吃水,會造成何種現象﹖ (A)KB增加量比 BM增加量要快(B)KB增加量比 BM減少量要快 (C)KB增加量比 BM減少量要慢 (D)KB增加量比 BM增加量要慢
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13.雙氧水加入二氧化錳的反應裝置如附圖,可以藉由什麼現象來觀察是否發生化學變化? (A)錐形瓶溶液顏色逐漸改變 (B)產生了氣泡 (C)二氧化錳質量逐漸變小 (D)產生黑色沉澱
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