K.C.
A. my son did the same thing at that age. He started to notice everything and asking about everything. This is just the beginning of all kinds of akward questions. Just be honest with him. You only have to tell him what you are comfortable with. Tell him about heaven and that everything is okay. Just let him know that you are okay with your mom having passed. Most kids get most worried about that part. I wouldn't tell him how it happened. Maybe you could just say that there was an accident if he asked how it happened. That way you can talk about your childhood with your mom with him and not worry about anymore questions.