下图是木炭在氧气中燃烧实验的操作示意图,请回答下列问题:*~)j2O0K9q.h*u+x
*~)j2O0K9q.h*u+x
(1)取用木炭的仪器叫'u0E(g2\0H/W8P)A ,未经点燃的木炭'Y+w1a;I7s+N.s (填“能”或“不能”)在氧气中燃烧。*~)j2O0K9q.h*u+x
(2)把红热的木炭插入盛有氧气的集气瓶时,应该由上向下缓慢插入,理由是:R9]3g7d8C(X)I)k,Z0P6U 。*~)j2O0K9q.h*u+x
(3)木炭在氧气中燃烧的现象是5o/f1o.t+{3~7c*h8_;q-A(z7Z;a9c*d3R ,待集气瓶冷却后,加入澄清石灰水振荡,观察到:I4x8W0Z1h4v/j2T9i 。*~)j2O0K9q.h*u+x