下面是实验室制取氨气的装置和选用的试剂,其中正确的是( )
A.
B.
C.
D.
BD
—I'd like to go hunting with you, but I have a meeting________.
—If you don't go, ________.[ ]
A. to attend; so do I
B. attending; so will I
C. attend; neither will I
D. to attend; nor will I
下列化学现象的描述,正确的是( )
A.把盛有红磷的燃烧匙伸入盛有氧气的集气瓶中,磷立即燃烧
B.硫在空气中燃烧,产生蓝紫色火焰
C.木炭在氧气中燃烧比在空气中燃烧更旺,发出白光并放出热量
D.红磷在氧气中燃烧生成一种白色气体