The Ghost of Yet to Come was silent and scary. He symbolizes fear of death and uncertainty of the future.
The two fat gentlemen were talking about Scrooge's death. They did not care and were laughing at his cheap funeral. Scrooge did not know that they were talking about him.
Tiny Tim's Death
Old Joe was buying Scrooge's expensive belongings stolen by the maid and housekeeper. They all justified their actions of stealing by stating that Scrooge was bad when he was alive and that he deserved that.
Scrooge saw a dead body, but did not know who it was. He felt sorry for that person because he was alone and nobody felt sorry for that dead man.
Tiny Tim's death was devastating to the whole family. He was a symbol of optimism and was kind to everyone despite his disability.
This scene is the climax and the moment of facing the truth. Scrooge finally understood that he would face a terrible destiny if he did not change.