[問題] 教甄題目兩題
這是99桃園縣的高中教師聯合甄選題目
下面打"問號"處是有疑問的選項,煩請板上各位高手幫忙解惑~謝謝!
1.下列關於化學鍵的敘述,何者正確?
(A)離子晶體中只含有離子鍵
(B)共價化合物分子中一定不含有離子鍵
? (C)元素分子中一定含有共價鍵
(D)由非金屬元素組成的化合物不一定是共價化合物
? (E)兩個非金屬原子間不可能形成離子鍵
正確解答:BCD
2.關於理想氣體,何者為錯誤?
(A)封閉氣體受壓縮而體積減少時,壓力上升
(B)常溫常壓下,O2比He更接近理想氣體
(C)承(A),壓力上升是因為氣體分子動能增加
? (D)H2O分子量比CO2小,故更接近理想氣體
正確解答:BC
抱歉,不會打"下標",題目中有數字的部分皆為下標。
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