请用化学知识解释下列问题:
①用稀有气体可制成霓虹灯,原因是____
②加热时试管炸裂____(写出一点);
③白炽灯泡钨丝上放少量红磷,其原因是____.
我会仿写
例:粉红粉红
____ ____ ____ ____ ____
I didn't know the way to the cinema .