No.. You can't change a first impression but you can give them an alternate latter impression?

A first impression is always a first impression, however your opinion about a person can change if you are open-minded. You have to be willing to give a person a chance and also to see what their true intentions are. It takes time.

Of course your impressions of someone can change as you get to know them

Absolutely. But it takes double the effort on their part

Yes..without question.

It depends.

Of course.

Certainly