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Author:
Journal / Book Title:
Year:
Volume:
Issue:
zi ce lian xi ti ( )
Pages:
45
-
48
Year:
1992
Issue:
6
Journal:
Teaching and Learning Reference for Middle School Chemistry
Keyword:
高锰酸钾
;
硫酸铜晶体
;
饱和溶液
;
固体
;
化合物
;
二氧化碳
;
物质
;
溶解度
;
碳元素
;
氧化铁
;
Abstract:
<正> 一、选择题 1.下列变化属于物理变化的是 A.钢铁生锈 B.蜡烛燃烧 C.冰融化成水 D.白磷自燃 2.下列物质属于纯净物的一组是 A.水煤气、干冰 B.高锰酸钾分解后的固体产物、液氧 C.含铁70%的氧化铁、硫酸铜晶体 D.食盐水、硫粉 3.乙炔(C
2
H
2
)中含有
Citations
No citation found
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